Sri Aurobindo
Letters of Sri Aurobindo
4. Reason, Science and Yoga
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Your dream was certainly not moonshine: it was an inner experience and can be given its full value. As for the other questions, they are full of complications and I do not feel armed to cut the Gordian knot with a sentence. Certainly, you are right to follow directly the truth for yourself and need not accept X’s
or anybody else’s proposition or solution. Man needs both faith and reason so long as he has not reached a surer insight and greater knowledge. Without faith he cannot certainly walk
on any road, and without reason he might very well be walking, even with the staff of faith to support him, in the darkness. X
himself founds his faith, if not on Reason yet on reasons; and the rationalist, 
the rationaliser or the reasoner must have some faith even if it be faith only in Reason itself as sufficient and authoritative, just as the believer has faith in his faith as sufficient and authoritative. Yet both are capable of error, as they must be since both are instruments of the human mind whose nature is to err, and they share that mind’s limitations. Each must walk by the light he has even though there are dark spots in which he stumbles.
All that is, however, another matter than the question about the present human civilisation. It is not this which has to be saved; it is the world that has to be saved and that will surely be done, though it may not be so easily or so soon as some wish or imagine, or in the way that they imagine. The present
must surely change, but whether by a destruction or a new construction on the basis of a greater Truth, is the issue. The Mother has left the question hanging and I can only do the same. After all, the wise man, unless he is a prophet or a Director of the Madras Astrological Bureau, must often be content to take the Asquithian position. Neither optimism nor pessimism is the truth: they are only modes of the mind or modes of the temperament.
Let us then, without either excessive optimism or excessive pessimism, “wait and see”.
Current publication:
Sri Aurobindo. Letters on Yoga // SABCL.- Volume 22. (≈ 28 vol. of CWSA).- Pondicherry: Sri Aurobindo Ashram, 1971.- 502 p.
Other publications:
[A letter: ] Sri Aurobindo. Sri Aurobindo to Dilip.- 1st ed.- In 4 Volumes.- Volume 4. 1938 – 1950 / edited by Shankar Bandopadhyay.- Pune: Heri Krishna Mandir Trust; Mysore: Mira Aditi, 2003.- 269 p.
Sri Aurobindo. Letters on Yoga. I // CWSA.- Volume 28. (≈ 22 vol. of SABCL).- Pondicherry: Sri Aurobindo Ashram, 2012.- 590 p.