Nowhere in the Canon does the Buddha list the seven sets of teachings under the name of Wings to Awakening. He mentions the seven sets as a group many times when he is summarizing his main teachings, but there is no firm evidence as to whether he ever actually gave a name to the group. In one passage he applies the term "wings to self-Awakening" to the five faculties [§77]; and in two passages [§§24-25] he makes reference to the seven Wings to Awakening, which may or may not denote the seven sets. Nevertheless, given the fact that the Buddha called the five faculties wings to self-Awakening, and all seven sets are equivalent to the five faculties, the name "Wings to Awakening" for all seven seems appropriate. This was the name that they definitely had in early post-canonical texts, such as the Petakopadesa, and that they have maintained ever since.

In addition, the practice of virtue forces one to develop a number of the "concentration" factors in the sets themselves, on a preliminary level of skill, thus making them strong and fit for formal concentration practice. To maintain a precept, one must keep it constantly in mind: this strengthens mindfulness. One must stick to one's determination to abide by one's principles: this strengthens persistence. One must pay attention to the present moment, for that is where the decision to keep or break a precept is made; and one must remain firm in one's cultivation of the sublime attitudes: these factors strengthen concentration. One must be clear about one's motives for acting, and at the same time be sensitive in knowing how to apply a particular precept to one's present situation: e.g., being quick to see how to avoid an issue in which telling the truth might be harmful, yet without telling a lie. This strengthens one's ability to analyze the mind in the present moment, intensifying one's powers of discernment in general. These four factors — mindfulness, effort, concentration, and discernment — are the central elements in all of the seven sets. Thus, the practice of virtue exercises, on a rudimentary level, the qualities of mind needed for concentration practice.

A close look at the seven sets will show that a similar relationship exists between these qualities, as they are developed in concentration practice, and the transcendent discernment toward which they lead. On the one hand, concentration is needed as a basis for discernment; on the other hand, discernment is exercised in developing concentration, becoming more precise and penetrating as a result. To understand how this happens, we must first note that the seven sets fall into two types. The first type consists of the four frames of reference, the four right exertions, and the four bases of power. Each of these sets focuses on a single factor in the "concentration aggregate" [§105] of the noble eightfold path: the frames of reference on mindfulness, the right exertions on effort, and the bases of power on concentration. Their factors are defined in such a way that the proper development of any one set involves the other two sets, together with the factor of discernment. In this sense they point out the "holographic" nature of the path: each part must include the whole, just as every piece of a hologram can reproduce the entire holographic image.

The sets included in the second type are the five faculties, the five strengths, the seven factors for Awakening, and the noble eightfold path. Each of these sets lists its factors in a causal chain progressing through a spiraling loop. The five faculties and strengths start with conviction, which then leads naturally to persistence, mindfulness, concentration, and then discernment. Discernment, in turn, provides a basis for even firmer conviction. Similarly, the seven factors for Awakening start with mindfulness, which develops into an analysis of (present) mental qualities, persistence, rapture, serenity, concentration, and finally equanimity. Equanimity, in turn, provides a steady basis for the further development of mindfulness. The noble eightfold path starts out with right view and right resolve, which together constitute discernment, leading to right speech, right action, right livelihood, right effort, right mindfulness, and right concentration. Concentration, in turn, forms a basis for the clearer development of discernment. In this way the various factors of the path are mutually reinforcing in an upward spiral that leads to Awakening.

Comparing the sets in the second type with one another, however, we find a certain complexity in their feedback loops. In terms of their most important factors, we see that the faculties and strengths depict the causal sequence as:

effort » mindfulness » concentration » discernment;

mindfulness » discernment » effort » concentration;

discernment » effort » mindfulness » concentration.

The two factors with the most variegated roles in these lists are mindfulness and discernment. Mindfulness is essential at every step along the way. There are passages [§26] teaching that mindfulness is a prerequisite for virtue, which — together with right view — is in turn a prerequisite for right mindfulness [§27]. Similarly, mindfulness is necessary for concentration, which in turn can be devoted to the development of greater mindfulness [§149], which can lead further to discernment.

As for discernment: If we look at the lists placing discernment after the other factors, we find that certain aspects of discernment are presumed by the earlier factors. In the five faculties, for instance, conviction includes belief in the principle of kamma, which is one of the elements of right discernment. In the lists that place discernment toward the beginning of the process, we find transcendent discernment added on to the end: the seven factors for Awakening, when fully developed, lead to clear knowing (transcendent discernment) and release; when the noble eightfold path reaches the point of full Awakening, it leads to right knowledge (transcendent discernment again) and right release. The implication here is that discernment, functioning on different levels, keeps adding feedback loops of ever greater sensitivity every step along the way. This point is made explicit in §106.

For this reason, skillfulness — as a constant, sensitive mindfulness and discernment toward one's own actions — lies at the essence of every moment in the continued development of the path. On the one hand it creates the conditions necessary for the path to develop: knowledge of what is skillful and unskillful must necessarily precede right effort and mindfulness, and must help mindfulness lead to concentration. On the other hand, the factors of mindfulness and concentration are necessary for discernment to become even more sensitive to the present moment. Thus, as the path spirals through its many feedback loops, it exercises discernment, making it stronger in the same way that muscles are strengthened with exercise. At the same time, the development of the path steadies the conditions that provide discernment with the solid basis it needs to become more and more precise, just as a solid foundation is necessary for sensitive measuring equipment. In this way discernment develops from a knowledge of what is skillful and unskillful, first gained through the advice and example of others, on through a more intuitive understanding of skillfulness gained through repeated action and reflection on one's actions, to a knowledge of the four noble truths and the duties appropriate to each, and finally to the knowledge that those duties have been fulfilled [§195]. The Wings thus put mundane discernment to use, and in so doing make it transcendent.

All of this explains why the Buddha said that of all the wings to self-Awakening, discernment is chief [§77]. In its more rudimentary forms it provides the conditions and feedback necessary for each step along the way; its transcendent form, at the culmination of the path, leads directly to Awakening.

The experience of Awakening, according to the texts, can take any one of four levels:

• stream-entry, i.e., entry into the stream leading to Unbinding — which cuts the fetters of self-identity views, uncertainty, and grasping at precepts and practices — ensuring that one will be reborn no more than seven more times;
• once-returning — which further weakens passion, aversion, and delusion — ensuring that one will be reborn no more than one more time;
• non-returning — which cuts the fetters of sensual passion and resistance — ensuring that one will be reborn in the highest heavens, called the Pure Abodes, there to obtain Unbinding, never to return to this world; and
• Arahantship — which cuts the fetters of passion for form, passion for formlessness, conceit, restlessness, and ignorance — bringing total freedom from the cycle of rebirth.

Although all four levels require mature levels of the path factors of virtue, concentration, and discernment to bring about the two knowledges that constitute Awakening, they differ in the relative maturity of the path factors that lead up to them. stream-entry occurs at the full maturation of virtue; non-returning, at the full maturation of concentration; and arahantship, at the full maturation of discernment [AN 3.88; MFU, pp. 103]. Thus they also differ in the depth to which they penetrate the two knowledges of Awakening and in their ability to cut the fetters that perpetuate bondage to the cycle of kamma and rebirth. The texts report a few cases where meditators go straight through all four levels to the level of arahantship, but in most cases the meditator will pass through the four levels step-by-step, sometimes over course of many years or even several lifetimes.

In this book, except where otherwise noted, discussions of the Awakening experience as described in the discourses focus on the level where virtue, concentration, and discernment are all fully mature, the Awakening total, and the resulting freedom absolutely unlimited. This is the point where all seven sets of the Wings to Awakening ultimately aim.

Passages from the Pali canon

§ 18. Paharada, just as the ocean has these many treasures of various kinds — pearls, sapphires, lapis lazuli, shells, quartz, coral, silver, gold, rubies, & cat's eyes — in the same way, this doctrine & discipline has these many treasures of various kinds: the four frames of reference, the four right exertions, the four bases of power, the five faculties, the five strengths, the seven factors for Awakening, the noble eightfold path. This is the seventh wonder & marvel... that the monks, having seen again & again in this doctrine & discipline, delight in.

— AN 8.19

§ 19. Then [after relinquishing the will to continue fabricating his life processes] the Blessed One went to the audience hall and on arrival sat down on the seat prepared for him. When he was seated, he addressed the monks: 'The qualities I have pointed out, having known them directly: You should grasp them thoroughly, cultivate them, develop them, & pursue them so that this holy life may long endure & remain steadfast for the benefit, welfare, & happiness of the multitude, out of sympathy for the world, for the benefit, welfare, & happiness of human & celestial beings. And what are those qualities? The four frames of reference, the four right exertions, the four bases of power, the five faculties, the five strengths, the seven factors for Awakening, the noble eightfold path. These are the qualities I have pointed out, having known them directly, that you should grasp thoroughly, cultivate, develop, & pursue... for the benefit, welfare, & happiness of human & celestial beings.' Then the Blessed One addressed the monks, 'I exhort you, monks: All fabrications are subject to decay. Bring about completion by means of heedfulness. It will not be long before the Tathagata's total Unbinding. He will attain total Unbinding in three month's time.'

That is what the Blessed One said. Then... he said further:

Young & old
wise & foolish
rich & poor:
all end up dying.

As a potter's clay vessels
large & small
fired & unfired
all end up broken,
so too life
heads to death.
Then the Teacher said further:
Ripe my age, little the life
remaining to me.
Leaving you, I will go,
having made a refuge
for myself.
Be heedful, monks,
mindful, virtuous.
With your resolves well-concentrated,
look after your minds.
He who, in this
doctrine & discipline,
remains heedful,
leaving the round
of birth,
will make an end
of stress.

§ 20. Suppose a hen has eight, ten, or twelve eggs: If she doesn't cover them rightly, warm them rightly, or incubate them rightly, then even though this wish may occur to her — 'O that my chicks might break through the egg shells with their spiked claws or beaks and hatch out safely!' — still it is not possible that the chicks will break through the egg shells with their spiked claws or beaks and hatch out safely. Why is that? Because the hen has not covered them rightly, warmed them rightly, or incubated them rightly. In the same way, even though this wish may occur to a monk who dwells without devoting himself to development — 'O that my mind might be released from effluents through lack of clinging!' — still his mind is not released from the effluents through lack of clinging. Why is that? From lack of developing, it should be said. Lack of developing what? The four frames of reference, the four right exertions, the four bases of power, the five faculties, the five strengths, the seven factors for Awakening, the noble eightfold path...

But suppose a hen has eight, ten, or twelve eggs that she covers rightly, warms rightly, & incubates rightly: Even though this wish may not occur to her — 'O that my chicks might break through the egg shells with their spiked claws or beaks and hatch out safely!' — still it is possible that the chicks will break through the egg shells with their spiked claws or beaks and hatch out safely. Why is that? Because the hen has covered them, warmed them, & incubated them rightly. In the same way, even though this wish may not occur to a monk who dwells devoting himself to development — 'O that my mind might be released from effluents through lack of clinging!' — still his mind is released from the effluents through lack of clinging. Why is that? From developing, it should be said. Developing what? The four frames of reference, the four right exertions, the four bases of power, the five faculties, the five strengths, the seven factors for Awakening, the noble eightfold path.

Just as when a carpenter or carpenter's apprentice sees the marks of his fingers or thumb on the handle of his adze but does not know, 'Today my adze handle wore down this much, or yesterday it wore down that much, or the day before yesterday it wore down this much,' still he knows it is worn through when it is worn through. In the same way, when a monk dwells devoting himself to development, he does not know, 'Today my effluents wore down this much, or yesterday they wore down that much, or the day before yesterday they wore down this much,' still he knows they are worn through when they are worn through.

Just as when an ocean-going ship, rigged with masts & stays, after six months on the water, is left on shore for the winter: Its stays, weathered by the heat & wind, moistened by the clouds of the rainy season, easily wither & rot away. In the same way, when a monk dwells devoting himself to development, his fetters easily wither & rot away.

— AN 7.68

§ 21. A certain monk went to his preceptor and on arrival said to him, 'My body, sir, now feels like it's drugged. I've lost my bearings. Things are unclear to me. Sloth & drowsiness surround my mind at all times. I am unhappy in leading the holy life. I have doubts about mental qualities (or: things — dhammas).'

Then the preceptor, taking his student, went to see the Buddha (and told him what his student had said. The Buddha replied:)

'That's the way it is for a person who does not guard the doors to his sense faculties, who does not know moderation in eating, who is not devoted to wakefulness, who does not clearly understand skillful qualities, and who is not devoted day after day to the development of the wings to Awakening... Thus you should train yourself, monk: "I will guard my senses, will know moderation in eating, will devote myself to wakefulness, will clearly understand skillful qualities, and will devote myself day after day to the development of the wings to Awakening." That's how you should train yourself.

Then the monk, having received this instruction from the Blessed One, got up from his seat, bowed down, circled the Blessed One, keeping him on his right, and then went away. Dwelling alone, secluded, heedful, ardent, & resolute, he in no long time reached & remained in the supreme goal of the holy life, for which clansmen rightly go forth from home into homelessness, knowing it & realizing it for himself in the here & now. He knew: 'Birth is ended, the holy life fulfilled, the task done. There is nothing further for the sake of this world.' And thus he became another one of the arahants.

— AN 5.56

§ 22. Endowed with three qualities, a monk is one who follows the way that cannot be faulted and he has aroused the basis for ending the effluents. Which three? There is the case where a monk guards the doors to his sense faculties, knows moderation in eating, & is devoted to wakefulness.

And how does a monk guard the doors to his sense faculties? There is the case where a monk, on seeing a form with the eye, does not grasp at any theme or variations by which — if he were to dwell without restraint over the faculty of the eye — evil, unskillful qualities such as greed or distress might assail him. He practices with restraint. He guards the faculty of the eye. He achieves restraint with regard to the faculty of the eye. (Similarly with the ear, nose, tongue, body & intellect.) This is how a monk guards the doors to his sense faculties.

And how does a monk know moderation in eating? There is the case where a monk, considering it appropriately, takes his food not playfully, nor for intoxication, nor for putting on bulk, nor for beautification, but simply for the survival & continuance of this body, for ending its afflictions, for the support of the holy life, thinking, 'I will destroy old feelings [of hunger] & not create new feelings [from overeating]. Thus I will maintain myself, be blameless, & live in comfort.' This is how a monk knows moderation in eating.

And how is a monk devoted to wakefulness? There is the case where a monk during the day, sitting & pacing back & forth, cleanses his mind of any qualities that would hold the mind in check. During the first watch of the night [dusk to 10 p.m.], sitting & pacing back & forth, he cleanses his mind of any qualities that would hold the mind in check. During the second watch of the night [10 p.m. to 2 a.m.], reclining on his right side, he takes up the lion's posture, one foot placed on top of the other, mindful, alert, with his mind set on getting up [either as soon as he awakens or at a particular time]. During the last watch of the night [2 a.m. to dawn], sitting & pacing back & forth, he cleanses his mind of any qualities that would hold the mind in check. This is how a monk is devoted to wakefulness.

Endowed with these three qualities, a monk is one who follows the way that cannot be faulted and he has aroused the basis for ending the effluents.

— AN 3.16

§ 23. Monks, if wanderers who are members of other sects should ask you, 'What, friend, are the prerequisites for the development of the wings to self-awakening?'... you should answer, 'There is the case where a monk has has admirable people as friends, companions, & comrades. This is the first prerequisite for the development of the wings to self-awakening.

'Furthermore, the monk is virtuous. He dwells restrained in accordance with the Patimokkha, consummate in his behavior & sphere of activity. He trains himself, having undertaken the training rules, seeing danger in the slightest faults. This is the second prerequisite for the development of the wings to self-awakening.

'Furthermore, he gets to hear at will, easily & without difficulty, talk that is truly sobering & conducive to the opening of awareness, i.e., talk on modesty, on contentment, on seclusion, on non-entanglement, on arousing persistence, on virtue, on concentration, on discernment, on release, and on the knowledge & vision of release. This is the third prerequisite for the development of the wings to self-awakening.

'Furthermore, he keeps his persistence aroused for abandoning unskillful mental qualities and for taking on skillful mental qualities. He is steadfast, solid in his effort, not shirking his duties with regard to skillful mental qualities. This is the fourth prerequisite for the development of the wings to self-awakening.

'Furthermore, he is discerning, endowed with the discernment of arising & passing away — noble, penetrating, leading to the right ending of stress. This is the fifth prerequisite for the development of the wings to self-awakening.'

Monks, when a monk has has admirable people as friends, companions, & comrades, it is to be expected that he will be virtuous, will dwell restrained in accordance with the Patimokkha, consummate in his behavior & sphere of activity, and will train himself, having undertaken the training rules, seeing danger in the slightest faults.

When a monk has has admirable people as friends, companions, & comrades, it is to be expected that he will get to hear at will, easily & without difficulty, talk that is truly sobering and conducive to the opening of awareness, i.e., talk on modesty, on contentment, on seclusion, on non-entanglement, on arousing persistence, on virtue, on concentration, on discernment, on release, and on the knowledge & vision of release... that he will keep his persistence aroused for abandoning unskillful mental qualities, and for taking on skillful mental qualities — steadfast, solid in his effort, not shirking his duties with regard to skillful mental qualities... that he will be discerning, endowed with discernment of arising & passing away — noble, penetrating, leading to the right ending of stress.

And furthermore, monks, when the monk is established in these five qualities, there are four additional qualities he should develop: He should develop [contemplation of] the unattractive so as to abandon lust. He should develop good will so as to abandon ill will. He should develop mindfulness of in-&-out breathing so as to cut off distractive thinking. He should develop the perception of inconstancy so as to uproot the conceit, 'I am.' For a monk perceiving inconstancy, the perception of not-self is made firm. One perceiving not-self attains the uprooting of the conceit, 'I am' — Unbinding in the here & now.

— AN 9.1

§ 24. These three divine sounds sound forth among the devas on appropriate occasions. Which three? When a disciple of the noble ones, shaving off his hair & beard, clothing himself in the ochre robe, makes up his mind to go forth from the home life into homelessness, on that occasion the divine sound sounds forth among the devas: 'This disciple of the noble ones has made up his mind to do battle with Mara'...

When a disciple of the noble ones lives engaged in developing the seven [sets of] qualities that are wings to Awakening, on that occasion the divine sound sounds forth among the devas: 'This disciple of the noble ones is doing battle with Mara'...

When a disciple of the noble ones, through the ending of effluents dwells in the awareness-release & discernment-release that are free from effluent, having known & made them manifest for himself in the here & now, on that occasion the divine sound sounds forth among the devas: 'This disciple of the noble ones has won the battle. Having been in the front lines of the battle, he now dwells victorious'... These are the three divine sounds that sound forth among the devas on appropriate occasions.

— Iti 82

§ 25. A monk who has admirable virtue, admirable qualities, & admirable discernment is called, in this doctrine & discipline, one who is complete, fulfilled, supreme among men.

And how is a monk a person with admirable virtue? There is the case where a monk is virtuous. He dwells restrained in accordance with the Patimokkha, consummate in his behavior & sphere of activity. He trains himself, having undertaken the training rules, seeing danger in the slightest faults. In this way a monk is a person with admirable virtue. Thus he is of admirable virtue.

And how is a monk a person with admirable qualities? There is the case where a monk lives engaged in developing of the seven [sets of] qualities that are wings to Awakening. In this way a monk is a person with admirable qualities. Thus he is of admirable virtue & admirable qualities.

And how is a monk a person with admirable discernment? There is the case where a monk, through the ending of effluents dwells in the awareness-release & discernment-release that are free from effluent, having known & made them manifest for himself in the here & now. In this way a monk is a person with admirable discernment. Thus he is of admirable virtue, admirable qualities, admirable discernment. In this doctrine & discipline he is called one who is complete, fulfilled, supreme among men.

B. The Four Frames of Reference

The four frames of reference (satipatthana) are a set of teachings that show where a meditator should focus attention and how. This dual role — the "where" and the "how" — is reflected in the fact that the term satipatthana can be explained etymologically in two ways. On the one hand, it can be regarded as a compound of sati (mindfulness, reference, the ability to keep something in mind) and patthana (foundation, condition, source), thus referring to the object that is kept in mind as a frame of reference for giving context to one's experience. Alternatively, satipatthana can be seen as a compound of sati and upatthana (establishing near, setting near), thus referring to the approach (the how) of keeping something closely in mind, of maintaining a solid frame of reference. Scholars are divided as to which interpretation is right, but for all practical purposes they both are. The Buddha was more a poet than a strict etymologist, and he may have deliberately chosen an ambiguous term that would have fruitful meanings on more than one level. In the practice of the frames of reference, both the proper object and the proper approach are crucial for getting the proper results. In fact, as we shall see, the taking of a proper object entails the beginning of the proper approach, and the approach ends by taking as its objects the qualities of mind developed in the course of pursuing the approach itself. In other words, as we mentioned in the Introduction concerning the Buddha's Awakening, the "what" merges with the "how" as the "how" of the investigation ultimately becomes what gets investigated.

The texts give two different pictures of the role that the frames of reference play in the practice. Some [§§33-34, 36] state that developing the frames of reference is a precondition for jhana, which then forms a basis for transcendent discernment. Others [§§27, 43] make no mention of jhana, stating that one goes directly from the frames of reference to the transcendent. On the surface, this would seem to indicate that there are two alternate paths: one with and one without jhana. This reading, though, contradicts the many passages maintaining that jhana is necessary for the development of transcendent discernment [§§165, 166, 171, 173, 178; some of these passages simply say "concentration" instead of jhana, but there seems to be every reason to assume that concentration here means right concentration, which is nothing other than jhana]. Thus we must look for an alternative reading, and we find one suggested by passages indicating that the development of the frames of reference implicitly entails the full development of the seven factors for Awakening. Because these factors are closely associated with jhana, this would indicate that the proper development of the frames of reference necessarily incorporates, in and of itself, the practice of jhana.