Knowledge of the Absolute depends upon no book, nor upon anything; it is absolute in itself. No amount of study will give this knowledge; is not theory, it is realization. Cleanse the dust from the mirror, purify your own mind, and in a flash you know that you are Brahman.
Swami VivekanandaThe Vedas give information on various subjects. They have come together and form one book. And in later times, when other subjects were separated from religion - when astronomy and astrology were taken out of religion - these subjects, being connected with the Vedas and being ancient, were considered very holy.
Swami Vivekananda