Of these various sects, in the first place, there can be made two main divisions, the orthodox and the unorthodox. Those that believe in the Hindu scriptures, the Vedas, as eternal revelations of truth, are called orthodox, and those that stand on other authorities, rejecting the Vedas, are the heterodox in India. The chief modern unorthodox Hindu sects are the Jains and the Buddhists. Among the orthodox some declare that the scriptures are of much higher authority than reason; others again say that only that portion of the scriptures which is rational should be taken and the rest rejected.