We all suffer; many sentient beings experience almost constant misery. However, at present we have the time, space and ability to think about how to get rid of all suffering—not get over just one problem or become a little more peaceful, but completely finish with suffering altogether.
We humans have many methods of finding happiness at our disposal but even though we live in beautiful houses crammed full of all kinds of stuff we are still not satisfied. That’s because there is only one thing that can really eradicate dissatisfaction and bring true happiness: the practice of Dharma.
If we check within ourselves we will discover that all our misery comes from either attachment or hatred. These, in turn, come from an incorrect view of the self. Even at this moment we hold the “I” to be true. In the Madhyamakavatara, Chandrakirti stated that all emotional afflictions arise from ignorance—misapprehension of the nature of the self. This is the root. In order to get rid of all the branches of suffering and prevent them from ever arising again, we need to sever this root. In that way we can put an end to all misery, even birth, sickness, aging and death.
The Buddha’s main teachings on eradicating ignorance by understanding and realizing the wisdom of non-self-existence are found in his Perfection of Wisdom (Prajnaparamita) Sutras, and these texts are the main scriptural source for the great sage Nagarjuna’s Six-fold Canon of Reasoning, especially his Root Verses on Wisdom (Mulamadhyamakakarika). Other teachings on the wisdom realizing emptiness may be found in Aryadeva’s Four Hundred Verses; Buddhapalita’s famous Commentary on [Nagarjuna’s] Treatise on the Middle Way (Buddhapalita-Mulamamadhyamakavrtti); Chandrakirti’s Clear Phrases (Prasannapada); and the ninth chapter of Shantideva’s Guide to the Bodhisattva’s Way of Life.
The essence of all the techniques found in these and other scriptures for developing an understanding of the emptiness of self-existence is the method called the “Four Essential Points,” or the “Four Keys.” These provide a very effective approach to emptiness. We begin by applying these four methods of analysis to gain an understanding of the selflessness of persons and then use them to gain an understanding of the selflessness of phenomena.
The first essential point
The first of the four keys is called “the essential point of ascertaining the object to be eliminated.” We cannot realize emptiness without first knowing what it is that things are empty of; emptiness is not just a vague nothingness. This first point helps us understand how the false self—the object to be refuted and eliminated—exists. We need to recognize how we view the “I” as inherently existent, as if it were independent of the aggregates of body and mind. The “I” appears to be substantially established, existent in its own right, and this mode of existence does not appear to be imposed by our own mental projection.
The way we hold and believe the “I” to exist becomes particularly clear when we’re angry or afraid. At such times we should analyze how the self appears to our mind; how our mind apprehends it. We can provoke these emotions in meditation and, while maintaining them, use a subtle part of our consciousness to recognize how we conceive our “I.”
In order to catch a thief we have to know who the person is and what he or she looks like. The greatest thief of all is our mistaken sense of self—the conception that not only ourselves but all other phenomena as well are truly existent. We believe that things really exist the way they appear to our senses, as objectively established, as existing from their own side. This, then, is what we have to know in order to catch this great thief, who steals all our happiness and peace of mind.
If we do not recognize this wrong conception and simply walk around saying, “Emptiness! Emptiness!” we are likely to fall into one of the two extremes of eternalism or nihilism—believing either that things are inherently existent or that nothing exists at all, thus exaggerating or denying conventional reality.
Therefore, we must recognize the false self, the object of refutation, before we can start actually refuting, or eliminating, it. This is the initial step in developing an understanding of emptiness and the foundation of realizing it. First we must look for the false self, not selflessness. This requires a great deal of meditation.
For our meditation on emptiness to be effective, we need to prepare our mind by purifying negativities and accumulating merit. The essence of purification and creation of merit is the practice of the seven limbs of prostration, offering, confessing, rejoicing, beseeching, requesting and dedicating. We can also engage in preliminaries such as making 100,000 mandala offerings, Vajrasattva mantra recitations and so forth.
When we start observing how the false self—the self we have habitually assumed to exist in persons and objects—manifests, we soon discover that it does not exist at all. Before we begin cultivating this awareness, our “I” seems to really be there, very solidly, but as soon as we start checking, we cannot find it. It disappears. If the “I” truly did exist, the more we searched for it the more concrete it should become…we should at least be able to find it. If it can’t be found, how can it exist?
The second essential point
The inherently existent “I” must exist as either one with the body and mind—that is, identical with them—or separate from them. There is no third way in which it can exist. This is the second of the four keys, ascertaining the logical pervasion of the two possibilities of sameness or difference.
We have to watch for the self-existent “I,” which appears to be established independently, as if it were not created by the mind. If the self does not exist as it appears, we should not believe in it. Perhaps we think it’s someplace else—that it will show up when we meet our guru or that it’s floating around outside the window somewhere. But we need to understand that there’s no third alternative. Therefore, we have to meditate on the second key with awareness that if this apparent “I” is neither identical with nor separate from the five aggregates of body and mind, there’s no way it can exist. At this point it becomes easy for us to understand the general character of emptiness.
The third essential point
The third key is ascertaining the absence of true sameness of the “I” and the five aggregates. Once we have ascertained the object of refutation by meditating on emptiness and seen how it cannot exist in a way other than as one with the five aggregates or separate from them, we concentrate on whether or not the self-existent “I” can exist as one with the five aggregates.
If the “I” is the same as the aggregates, then because there are five aggregates, there must be five continuums of the “I” or, because the “I” is one, the five aggregates must be an indivisible whole. We therefore examine each aggregate to see if it is the same as the self. We ask, “Are my self and my body the same?” “Are my self and my feelings the same?” “Are my self and my discriminating awareness the same?” And so forth.
There are many different analytical procedures to show that the concept of the self as one with the psychophysical aggregates is wrong. I can deal with them only briefly here. For example, if the self were a permanent entity, as self-existence implies, destroying it would be impossible. Then, if the “I” were the same as the body, the body could never die and the corpse could never be burned, because this would destroy the self. This is obviously nonsensical.
Also, the mind and body would be unchanging, because that is the nature of a substantial self. Furthermore, if there were a self-existent “I” identical with the body and the mind, it would be one indistinguishable entity and the individual designations of “my body” and “my mind” would be incorrect.
Thus, there are many different ways we can reason and meditate upon to arrive at the conclusion that reality and our habitual way of perceiving things are completely different. We are not fixed, permanent entities.
The fourth essential point
Having ascertained, as above, that the self and the aggregates are not a true unity, we then consider whether or not our self-existent “I” is different from and unrelated to the aggregates. This is the fourth key, ascertaining the absence of any true difference between the self and the aggregates.
For example, if you have a sheep, a goat and an ox, you can find the ox by taking away the sheep and the goat. Similarly, if the “I” existed separately from the body and the mind, when we eliminated the body and the mind we would be left with a third entity to represent the “I.” But when we search outside of our body, feelings, consciousness etc., we come up with nothing. Generations of yogis have found that there is nothing to be found beyond the aggregates.
Once more, there are many different ways to reason when contemplating the possibility that the self is separate from the aggregates. If they were truly different, there would be no connection between them. When we said, for example, “My head aches,” the “my” would refer to something other than the “head” (the form aggregate) and “ache” (the feeling aggregate); it would be something that existed somewhere else. The aggregate would hurt, not me. If the self were truly a different thing, a true polarity apart from the aggregates, it would be absurd to say, “My head hurts,” “My hand hurts,” etc., as though the pain somehow affected the self.
By performing different kinds of analysis we cultivate the certainty that the self and the aggregates are not truly different.
Meditation on emptiness
Since these four keys contain the essential points of Nagarjuna’s main treatises on the Middle Way, they make it easy to meditate on emptiness.
If we meditate with the four keys to search for the self in our body, from the top of our head to the tips of our toes, and our aggregates of mind as well, we won’t find anything. Thus, we will come to the realization that a fixed, unchanging self does not exist. It’s like looking for a cow in a certain field. We walk all around: up the hills, down the valleys, through the trees, everywhere. Having searched the entire area and found nothing, we arrive at the certainty that the cow simply isn’t there. Similarly, when we investigate the aggregates of body and mind and find nothing, we arrive at the certainty that the self-existent “I” simply isn’t there either. This is the understanding of emptiness.
We then concentrate single-pointedly on the experience of the absence of the self that we had always presumed to exist. Whenever this certainty begins to weaken or lose clarity, we return to our analytical meditation and again check through the four keys. Once more a sharpness of certainty arises and we return to concentrating on it single-pointedly. In this way we cultivate two things: the certainty of finding nothing there and the subjective experience of how this appears. By keeping these two together and not allowing our mind to wander we reach what is called the single-pointed concentration of balanced space-like absorption, wherein everything appears non-dual. Subject and object merge like water poured into water.
We also have to learn what to do when we arise from meditation—in the post-meditation period we have to view everything that appears as illusory. Even though things appear to be self-existent, they are simply the sport of emptiness, like a magician’s creations. This state is called the samadhi of illusory manifestations.
Our practice should alternate in this way between the samadhi of space-like absorption and that of illusory manifestation, thus avoiding the extremes of absolutism and nihilism. This activates the mental factor called ecstasy and we experience intense physical and mental ease. Our meditation just seems to take off on its own without requiring any effort. Once this ecstasy is activated, the power of our meditation increases one hundred times and we achieve penetrative insight into emptiness.
We should spend a great deal of time meditating on the four keys. It may be difficult but it is the most powerful and beneficial form of meditation for counteracting delusions. As Aryadeva said, “Even doubting the validity of emptiness rips samsara to shreds.”
Meditation on emptiness is the most powerful way to purify negative karma. During Guru Shakyamuni Buddha’s time there was a king who had killed his own father. He was terrified that this evil act would cause him to be reborn in hell and asked the Buddha for advice. The Buddha instructed him to meditate on emptiness. The king devoted himself to this practice and was able to purify that negative karma from his mindstream.
After Lama Tsongkhapa attained enlightenment he wrote the poem In Praise of the Buddha’s Teaching on Dependent Arising, in which he stated that although all of the Buddha’s teachings are beneficial and undeceiving, the most beneficial and undeceiving, the most miraculously wonderful, is his teaching on emptiness, because by meditating on it sentient beings can cut the root of samsara and attain liberation from all suffering. In awe and amazement, Lama Tsongkhapa thus praised the Buddha’s uncanny perceptiveness and reliability of knowledge as both a scientist and philosopher.
When we understand that the Buddha really did know and describe the true nature of reality by means of his teachings on emptiness, firm faith arises within us. This faith is not based upon stories or fantasy but upon the experience that arises by practicing and realizing the situation for ourselves. We find that reality exists exactly the way the Buddha described it. Furthermore, he discovered this reality a long, long time ago, without the need of so-called scientific instruments.