Jnana-Yoga :3.4.

( Delivered in London )

 The theory of the all-pervading life principle, of which all life in this universe is but a differing manifestation, was understood in Vedic times; it is found in the Brâhmanas. There is a long hymn in the Samhitâs in praise of Prâna of which all life is but a manifestation. By the by, it may interest some of you to know that there are theories in the Vedic philosophy about the origin of life on this earth very similar to those which have been advanced by some modern European scientists. You, of course, all know that there is a theory that life came from other planets. It is a settled doctrine with some Vedic philosophers that life comes in this way from the moon.

Coming to the principles, we find these Vedic thinkers very courageous and wonderfully bold in propounding large and generalised theories. Their solution of the mystery of the universe, from the external world, was as satisfactory as it could be. The detailed workings of modern science do not bring the question one step nearer to solution, because the principles have failed. If the theory of ether failed in ancient times to give a solution of the mystery of the universe, working out the details of that ether theory would not bring us much nearer to the truth.
Swami Vivekananda
To be continued  ....