Sri Aurobindo
Letters on Yoga
4. Reason, Science and Yoga
The defect in what X writes about Science seems to be that he is insisting vehemently on the idea that Science is still materialistic or at least that scientists, Jeans and Eddington excepted, are still fundamentally materialists. This is not the fact. Most continental scientists have now renounced the idea that Science can explain the fundamentals of existence. They hold that Science is only concerned with process and not with fundamentals. They declare that it is not the business of Science nor is it within its means to decide anything about the great questions which concern philosophy and religion. This is the enormous change which the latest developments of Science have brought about. Science itself nowadays is neither materialistic nor idealistic. The rock on which materialism was built and which in the 19th century seemed unshakable has now been shattered. Materialism has now become a philosophical speculation just like any other theory; it cannot claim to found itself on a sort of infallible Biblical authority, based on the facts and conclusions of Science. This change can be felt by one like myself who grew up in the 
heyday of absolute rule of scientific materialism in the 19th century. The way which had been almost entirely barred, except by rebellion, now lies wide open to spiritual truths, spiritual ideas, spiritual experiences. That is the real revolution. Mentalism is only a half-way house, but mentalism and vitalism are now perfectly possible as hypotheses based on the facts of existence, scientific facts as well as any others. The facts of Science do not compel anyone to take any particular philosophical direction. They are now neutral and can even be used on one side or another though most scientists do not consider such a use as admissible. Nobody here ever said that the new discoveries of Physics supported the ideas of religion or churches; they merely contended that Science had lost its old materialistic dogmatism and moved away by a revolutionary change from its old moorings.
It is this change which I expected and prophesied in my poems in the first Ahana volume, “A Vision of Science” and “In the Moonlight”.
Current publication:
Sri Aurobindo. Letters on Yoga // SABCL.- Volume 22. (≈ 28 vol. of CWSA).- Pondicherry: Sri Aurobindo Ashram, 1971.- 502 p.
Other publications:
Sri Aurobindo. Letters on Yoga. I // CWSA.- Volume 28. (≈ 22 vol. of SABCL).- Pondicherry: Sri Aurobindo Ashram, 2012.- 590 p.
Sri Aurobindo. Letters of Sri Aurobindo: In 4 Series.- First Series [On Yoga].- Bombay: Sri Aurobindo Sircle, 1947.- 416 p.