Now the moral law, in order that it may be feared, needs to be embodied in the personality of a god. Most of their gods inspire no fear at all in the souls of the Brahmans; but there is one of whom they have a dread, which is all the greater for being illogical. Prajāpati is a vast impersonality, too remote and abstract to inspire the soul with either fear or love. The other gods—Indra, Agni, Sōma, Varuṇa, Vishṇu, and the rest—are his offspring, and are moved like puppets by the machinery of the ritual of sacrifice created by him. However much they may seem to differ one from another in their attributes and personalities, they are in essence one and negligible in the eyes of the master of the ritual lore. In the beginning, say the Brāhmaṇas, all the gods (except Prajāpati, of course) were alike, and all were mortal; then they performed sacrifices and thereby became immortal, each with his peculiar attributes of divinity.[18] Thus at bottom they are all the same thing, merely phases of the universal godhead, waves stirred up by the current of the cosmic sacrifice. They have no terrors for the priesthood. But there is one deity who obstinately refuses to accommodate himself to this convenient point of view, and that is Rudra, or Śiva. By rights and logically he ought to fall into rank with the rest of the gods; but there is a crossgrained element in his nature which keeps him out. As we have seen, he comes from a different source: in origin he was a demon, a power of terror, whose realm of worship lay apart from that of the gods of higher class, and now, although it has extended into the domains of orthodox religion, an atmosphere of dread still broods over it.[19] Rudra wields all his ancient terrors over a much widened area. The priests have assigned him a regular place in their liturgies, and fully recognise him in his several phases as Bhava, Śarva, Ugra, Mahā-dēva or the Great God, Rudra, Īśāna or the Lord, and Aśani or the Thunderbolt (KB. VI. 2-9). Armed with his terrors, he is fit to be employed in the service of conscience. Hence a myth has arisen that in order to punish Prajāpati for his incest with his daughter the gods created Bhūta-pati (who is Paśu-pati or Rudra under a new name), who stabbed him. The rest of the myth is as immaterial to our purpose as it is unsavoury; what is important is that the conscience of the Brahmans was beginning to feel slight qualms at the uncleanness of some of their old myths and to look towards Rudra as in some degree an avenger of sin. In this is implied an immense moral advance. Henceforth there will be a gradual ennoblement of one of the phases of the god's character. Many of the best minds among the Brahmans will find their imaginations stirred and their consciences moved by contemplation of him. To them he will be no more a mere demon of the mountain and the wild. His destructive wrath they will interpret as symbolising the everlasting process of death-in-life which is the keynote of nature; in his wild dances they will see imaged forth the everlasting throb of cosmic existence; to his terrors they will find a reverse of infinite love and grace. The horrors of Rudra the deadly are the mantle of Śiva the gracious. Thus, while the god's character in its lower phases remains the same as before, claiming the worship of the basest classes of mankind, and nowise rising to a higher level, it develops powerfully and fruitfully in one aspect which attracts grave and earnest imaginations. The Muni, the contemplative ascetic, penetrates in meditation through the terrors of Śiva's outward form to the god's inward love and wisdom, and beholds in him his own divine prototype. And so Śiva comes to be figured in this nobler aspect as the divine Muni, the supreme saint and sage.
While the worship of Śiva is slowly making its way into the heart of Brahmanic ritualism, another movement is at work which is gradually drawing many of the keenest intellects among the Brahmans away from the study of ritual towards an idealistic philosophy which views all ritual with indifference. Its literature is the Upanishads.
The passing of the Ṛigvēdic age has left to the Brahmans a doctrinal legacy, which may be thus restated: a single divine principle through a prototypic sacrifice has given birth to the universe, and all the processes of cosmic nature are controlled by sacrifices founded upon that primeval sacrifice. In short, the ritual symbolises and in a sense actually is the whole cosmic process. The ritual implies both the knowledge of the law of sacrifice and the proper practice of that law, both understanding and works. This is the standpoint of the orthodox ritualist. But there has also arisen a new school among the Brahmans, that of the Aupanishadas, which has laid down for its first doctrine that works are for the sake of understanding, that the practice of ritual is of value only as a help to the mystic knowledge of the All. But here they have not halted; they have gone a further step, and declared that knowledge once attained, works become needless. Some even venture to hint that perhaps the highest knowledge is not to be reached through works at all. And the knowledge that the Aupanishadas seek is of Brahma, and is Brahma.
The word brahma is a neuter noun, and in the Ṛig-vēda it means something that can only be fully translated by a long circumlocution. It may be rendered as "the power of ritual devotion"; that is to say, it denotes the mystic or magic force which is put forth by the poet-priest of the Ṛig-vēda when he performs the rites of sacrifice with appropriate chanting of hymns—in short, ritual magic. This mystic force the Ṛigvēdic poets have represented in personal form as the god Bṛihaspati, in much the same way as they embodied the spirit of the sacrifice in Vishṇu. Their successors, the orthodox ritualists of the Brāhmaṇas, have not made much use of this term; but sometimes they speak of Brahma as an abstract first principle, the highest and ultimate source of all being, even of Prajāpati (Sāmav. B. I. 1, Gōp. B. I. i. 4); and when they speak of Brahma they think of him not as a power connected with religious ceremony but as a supremely transcendent and absolutely unqualified and impersonal First Existence. But the school of the Aupanishadas has gone further. Seeking through works mystic knowledge as the highest reality, they see in Brahma the perfect knowledge. To them the absolute First Existence is also transcendently full and unqualified Thought. As knowledge is power, the perfect Power is perfect Knowledge.
Brahma then is absolute knowledge; and all that exists is really Brahma, one and indivisible in essence, but presenting itself illusively to the finite consciousness as a world of plurality, of most manifold subjects and objects of thought. The highest wisdom, the greatest of all secrets, is to know this truth, to realise with full consciousness that there exists only the One, Brahma, the infinite Idea; and the sage of the Upanishads is he who has attained this knowledge, understanding that he himself, as individual subject of thought, is really identical with the universal Brahma. He has realised that he is one with the Infinite Thought, he has raised himself to the mystic heights of transcendental Being and Knowledge, immeasurably far above nature and the gods. He knows all things at their fountain-head, and life can nevermore bring harm to him; in his knowledge he has salvation, and death will lead him to complete union with Brahma.
The Aupanishadas have thus advanced from the pantheism of the orthodox ritualists to a transcendental idealism. The process has been gradual. It was only by degrees that they reached the idea of salvation in knowledge, the knowledge that is union with Brahma; and it was likewise only through slow stages that they were able to conceive of Brahma in itself. Many passages in the Upanishads are full of struggles to represent Brahma by symbols or forms perceptible to the sense, such as ether, breath, the sun, etc. Priests endeavoured to advance through ritual works to the ideas which these works are supposed to symbolise: the ritual is the training-ground for the higher knowledge, the leading-strings for infant philosophy. Gradually men become capable of thinking without the help of these symbols: philosophy grows to manhood, and looks with a certain contempt upon those supports of its infancy.
The nature of Brahma as conceived in the Upanishads is a subject on which endless controversies have raged, and we need not add to them. Besides, the Upanishads themselves are not strictly consistent on this point, or on others, for that matter; for they are not a single homogeneous system of philosophy, but a number of speculations, from often varying standpoints, and they are frequently inconsistent. But there are some ideas which are more or less present in all of them. They regard Brahma as absolute and infinite Thought and Being at once, and as such it is one with the consciousness, soul or self, of the individual when the latter rids himself of the illusion of a manifold universe and realises his unity with Brahma. Moreover, Brahma is bliss—the joy of wholly perfect and self-satisfied thought and being. Since Brahma as universal Soul is really identical with each individual soul or ātmā, and vice versa, it follows that each individual soul contains within itself, qua Brahma, the whole of existence, nature, gods, mankind, and all other beings; it creates them all, and all depend upon it. Our Aupanishadas are thoroughgoing idealists.
Another new idea also appears for the first time in the early Upanishads, and one that henceforth will wield enormous influence in all Indian thought. This is the theory of karma and saṃsāra, rebirth of the soul in accordance with the nature of its previous works. Before the Upanishads we find no evidence of this doctrine: the nearest approach to it is in some passages of the Brāhmaṇas which speak of sinful men dying again in the next world as a punishment for their guilt. But in the Upanishads the doctrine appears full-fledged, and it is fraught with consequences of immense importance. Saṃsāra means literally a "wandering to and fro," that is, the cycle of births through which each soul must everlastingly pass from infinite time, and Karma means the "acts" of each soul. Each work or act performed by a living being is of a certain degree of righteousness or unrighteousness, and it is requited by a future experience of corresponding pleasure or pain. So every birth and ultimately every experience of a soul is determined by the righteousness of its previous acts; and there is no release for the soul from this endless chain of causes and effects unless it can find some supernatural way of deliverance. The Aupanishadas point to what they believe to be the only way: it is the Brahma-knowledge of the enlightened sage, which releases his soul from the chain of natural causation and raises him to everlasting union with Brahma.
The teaching of the Upanishads has had two very different practical results. On the one hand, it has moved many earnest thinkers to cast off the ties of the world and to wander about as homeless beggars, living on alms and meditating and discoursing upon the teachings of the Upanishads, while they await the coming of death to release their souls from the prison of the flesh and bring it to complete and eternal union with Brahma. These wandering ascetics—sannyāsīs, bhikshus, or parivrājakas they are called—form a class by themselves, which is destined to have an immense influence in moulding the future thought of India. The teaching of Brahmanism is beginning to recognise them, too. It has already divided the life of the orthodox man into three stages, or āśramas, studentship, the condition of the married householder, and thirdly the life of the hermit, or vānaprastha, to which the householder should retire after he has left a son to maintain his household; and now it is beginning to add to these as fourth stage the life of the homeless ascetic awaiting death and release. But this arrangement is for the most part a fiction, devised in order to keep the beggar-philosophers within the scheme of Brahmanic life; in reality they themselves recognise no such law.
The other current among the Aupanishadas is flowing in a very different direction. We have seen how the worship of Rudra-Śiva has grown since the old Ṛigvēdic days, and how some souls have been able to see amidst the terrors of the god a power of love and wisdom that satisfies their deepest hopes and longings, as none of the orthodox rituals can do. A new feeling, the spirit of religious devotion, bhakti as it is called, is arising among them. To them—and they number many Brahmans as well as men of other orders—Śiva has thus become the highest object of worship, Īśvara or "the Lord"; and having thus enthroned him as supreme in their hearts, they are endeavouring to find for him a corresponding place in their intellects. To this end they claim that Śiva as Īśvara is the highest of all forms of existence; and this doctrine is growing and finding much favour. Among the Aupanishadas there are many who reconcile it with the teaching of the Upanishads by identifying Śiva with Brahma. Thus a new light begins to flicker here and there in the Upanishads as the conception of Śiva, a personal god wielding free grace, colours the pale whiteness of the impersonal Brahma; and at last in the Śvētāśvatara, which though rather late in date is not the least important of the Upanishads, this theistic movement boldly proclaims itself: the supreme Brahma, identified with Śiva, is definitely contrasted with the individual soul as divine to human, giver of grace to receiver of grace. Later Upanishads will take up this strain, in honour of Śiva and other gods, and finally they will end as mere tracts of this or that theistic church.