In my recent work on Brāhmanism I have traced the progress of Indian religious thought through three successive stages—called by me Vedism, Brāhmanism, and Hindūism—the last including the three subdivisions of Ṡaivism, Vaishṇavism, and Ṡāktism. Furthermore I have attempted to prove that these systems are not really separated by sharp lines, but that each almost imperceptibly shades off into the other.

I have striven also to show that a true Hindū, of the orthodox school is able quite conscientiously to accept all these developments of religious belief. He holds that they have their authoritative exponents in the successive bibles of the Hindū religion, namely, (1) the four Vedas—Ṛig-veda, Yajur-veda, Sāma-veda, Atharva-veda— and the Brāhmaṇas; (2) the Upanishads; (3) the Law-books—especially that of Manu; (4) the Bhaktiṡāstras, including the Rāmāyaṇ, the Mahā-bhārata, the Purāṇas—especially the Bhāgavata-purāṇa—and the Bhagavad-gītā; (5) the Tantras.

The chief works under these five heads represent the principal periods of religious development through which the Hindū mind has passed.

Thus, in the first place, the hymns of the Vedas and the ritualism of the Brāhmaṇas represent physiolatry or the worship of the personified forces of nature—a form of religion which ultimately became saturated with sacrificial ideas and with ceremonialism and asceticism. Secondly, the Upanishads represent the pantheistic conceptions which terminated in philosophical Brāhmanism. Thirdly, the Law-books represent caste-rules and domestic usages.