In a word what constituted the life and spirit of Buddhism is nothing else than the inner life and spirit of the Buddha himself; Buddhism is the structure erected around the inmost consciousness of its founder. The style and material of the outer structure may vary as history moves forward, but the inner meaning of Buddhahood which supports the whole edifice remains the same and ever living. While on earth, the Buddha tried to make it intelligible in accordance with the capacities of his immediate followers, that is to say, the latter did their best to comprehend the deeper significance of the various discourses of their master, in which he pointed the way to final deliverance. As we are told, the Buddha discoursed “with one voice,”[f23] but this was interpreted and understood by his devotees in as manifold manners as possible. This was inevitable, for we have each his own inner experience which is to be explained in terms of his own creation, naturally varying in depth and breadth. In most cases these so-called individual inner experiences, however, may not be so deep and forceful as to demand absolutely original phraseology, but may remain satisfied with new interpretations of the old terms—once brought into use by an ancient original spiritual leader. And this is the way every great historical religion grows enriched in its contents or ideas. In some cases this enrichment may mean the overgrowth of superstructures ending in a complete burial of the original spirit. This is where critical judgment is needed, but otherwise we must not forget to recognise the living principle still in activity. In the case of Buddhism we must not neglect to read the inner life of the Buddha himself asserting itself in the history of a religious system designated after his name. The claim of the Zen followers that they are transmitting the essence of Buddhism is based on their belief that Zen takes hold of the enlivening spirit of the Buddha, stripped of all its historical and doctrinal garments.

Some vital problems of Buddhism

To the earlier Buddhists the problem did not present itself in this light; that is to say, they did not realise that the centre of all their dogmatics and controversies was to ascertain the real inner life of the Buddha, which constituted their active faith in the Buddha and his teaching. Without exactly knowing why, they first entertained, after the passing of the Buddha, a strong desire to speculate on the nature of his personality. They had no power to check the constant and insistent cry of this desire brimming over in their inmost hearts. What constituted Buddhahood? What was the essence of Buddhahood? Questions like these assailed them one after another, and among those there were the following which stood out more prominently as they were more vitally interesting. They were those concerned with the Enlightenment of the Buddha, his entrance into Nirvana, his former life as a Bodhisattva (that is, as one capable of Enlightenment), and his teaching as viewed from their way of understanding the Buddha. Thus his teaching ceased to be considered independently of its author, the truth of the teaching was so organically connected with the Buddha’s personality, the Dharma was to be believed because it was the very embodiment of Buddhahood, and not necessarily because it was so logically consistent or philosophically tenable. The Buddha was the key to the truth of Buddhism.

When attention thus centres in the person of the Buddha as the author of the Dharma, the question of his inner experience known as Enlightenment becomes the most vital one. Without this experience the Buddha could not be called a Buddha; in fact, the term “Buddha,” the Enlightened One, was his own making. If a man understands what enlightenment is or really experiences it in himself, he knows the whole secret of the Buddha’s superhuman nature and with it the riddle of life and the world. The essence of Buddhism must then lie in the Doctrine of Perfect Enlightenment. In the enlightened mind of the Buddha there were many things which he did not and could not divulge to his disciples. When he refused to answer metaphysical questions, it was not because the minds of the questioners were not developed enough to comprehend the full implications of them. If however the Buddhists really desired to know their master, and his teaching, they had to study the secrets of Enlightenment. As they had no living master now they had to solve the problems by themselves if they could, and they were never tired of exhausting their intellectual ingenuity on them. Various theories were then advanced, and Buddhism grew richer in content, it came to reflect something eternally valid besides mere personal teaching of an individual. It ceased to be a thing merely historical, but a system ever living, growing, and energy-imparting. Various Mahayana Sutras and Shastras were produced to develop various aspects of the content of Enlightenment as realised by the Buddha. Some of them were speculative, others mystical, and still others ethical and practical. In the idea of Enlightenment was thus focussed all Buddhist thought.

Nirvana as the ideal of Buddhist life next engaged the serious attention of Buddhist philosophers. Was it an annihilation of existence, or that of passions or desires, or the dispelling of ignorance, or a state of egolessness? Did the Buddha really enter into a state of utter extinction leaving all sentient beings to their own fate? Did the love he showed to his followers vanish with his passing? Would he not come back among them in order to guide them, to enlighten them, to listen to their spiritual anguish? The value of such a grand personality as the Buddha could not perish with his physical existence, it ought to remain with us for ever as a thing of eternal validity. How could this notion be reconciled with the annihilation theory of Nirvana so prevalent among the personal disciples of the Buddha? When history conflicts with our idea of value, can it not be interpreted to the satisfaction of our religious yearnings? What is the objective authority of “facts” if not supported by an inwardly grounded authority? Varieties of interpretation are then set forth in the Mahayana texts as to the implications of Nirvana and other cognate conceptions to be found in the “original” teaching of the Buddha.[f24]

What is the relationship between Enlightenment and Nirvana? How did Buddhists come to realise Arhatship? What convinced them of their attainment? Is the Enlightenment of an Arhat the same as that of the Buddha? To answer these questions and many others in close connection with them was the task imposed upon various schools of Hinayana and Mahayana Buddhism. While they quarrelled much, they never forgot that they were all Buddhists and whatever interpretations they gave to these problems they were faithful to their Buddhist experience. They were firmly attached to the founder of their religion and only wished to get thoroughly intimate with the faith and teaching as were first promulgated by the Buddha. Some of them were naturally more conservative and wished to submit to the orthodox and traditional way of understanding the Dharma; but there were others as in every field of human life, whose inner experience meant more to them, and to harmonise this with the traditional authority they resorted to metaphysics to its fullest extent. Their efforts, there is no doubt, were honest and sincere, and when they thought they solved the difficulties or contradictions they were satisfied inwardly as well as intellectually. In fact they had no other means of egress from the spiritual impasse in which they found themselves through the natural and inevitable growth of their inmost life. This was the way Buddhism had to develop if it ever had in it any life to grow.

While Enlightenment and Nirvana were closely related to the conception of Buddhahood itself, there was another idea of great importance to the development of Buddhism, which however had no direct connection apparently, though not in its ultimate signification, with the personality of the Buddha. This idea naturally proved to be most fruitful in the history of Buddhist dogmatics along with the doctrines of Enlightenment and Nirvana. I mean by this the doctrine of non-Atman which denies the existence of an ego-substance in our psychic life. When the notion of Atman was ruling Indian minds, it was a bold announcement on the part of the Buddha to regard it as the source of ignorance and transmigration. The theory of Origination (pratītya-samutpāda) which seems to make up the foundation of the Buddha’s teaching is thus finally resolved into the finding of a mischievous “designer” who works behind all our spiritual restlessness. Whatever interpretation was given to the doctrine of non-Atman in the early days of Buddhism, the idea came to be extended over to things inanimate as well. Not only there was no ego-substance behind our mental life, but there was no ego in the physical world, which meant that we could not separate in reality acting from actor, force from mass, or life from its manifestations. As far as thinking goes, we can establish these two pairs of conception as limiting each other, but in the actuality of things they must all be one, as we cannot impose our logical way of thinking upon reality in its concreteness. When we transfer this separation from thought into reality, we encounter many difficulties not only intellectual but moral and spiritual, from which we suffer unspeakable anguish later. This was felt by the Buddha, and he called this mixing up Ignorance (avidyā). The Mahayana doctrine of Śūnyatā was a natural conclusion. But I need not make any remark here to the effect that the Śūnyatā theory is not nihilism or acosmism, but that it has its positive background which sustains it and gives life to it.

It was in the natural order of thought now for Buddhists to endeavour to find a philosophical explanation of Enlightenment and Nirvana in the theory of non-Atman or Śūnyatā, and this to the best of their intellectual power and in the light of their spiritual experience. They finally found out that Enlightenment was not a thing exclusively belonging to the Buddha, but that each one of us could attain it if he got rid of ignorance by abandoning the dualistic conception of life and of the world; they further concluded that Nirvana was not vanishing into a state of absolute non-existence which was an impossibility as long as we had to reckon with the actual facts of life, and that Nirvana in its ultimate signification was an affirmation—an affirmation beyond opposites of all kinds. This metaphysical understanding of the fundamental problem of Buddhism marks the features of the Mahayana philosophy. As to its practical side where the theory of Śūnyatā and the doctrine of Enlightenment are harmoniously united and realised in life, or where the Buddhists aim to enter into the inner consciousness of the Buddha as was revealed to him under the Bodhi tree, we will refer to it in the following section.


Almost all Buddhist scholars in Japan agree that all these characteristic ideas of the Mahayana are systematically traceable in Hinayana literature; and that all the reconstructions and transformations which the Mahayanists are supposed to have put on the original form of Buddhism are really nothing but an unbroken continuation of one original Buddhist spirit and life, and further that even the so-called primitive Buddhism as is expounded in the Pali canons and in the Agama texts of the Chinese Tripitaka, is also the result of an elaboration on the part of the earlier followers of the Buddha. If the Mahayana is not Buddhism proper, neither is the Hinayana, for the historical reason that neither of them represents the teaching of the Buddha as it was preached by the Master himself. Unless one limits the use of the term Buddhism very narrowly and only to a certain form of it, no one can very well refuse to include both Mahayana and Hinayana in the same denomination. And, in my opinion, it is proper, considering the organic relation between system and experience and the fact that the spirit of the Buddha himself is present in all these constructions, it is proper that the term Buddhism should be used in a broad, comprehensive, and inward sense.