Sri Aurobindo
Letters on Yoga
4. Reason, Science and Yoga
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The desire [of the occultists and the spiritists] to satisfy the physical scientists is absurd and illogical. The physical scientists have their own field with its own instruments and standards. To apply the same tests to phenomena of a different kind is as foolish as to apply physical tests to spiritual truth. One can’t dissect God or see the soul under a microscope. So also the subjection of disembodied spirits or even of psycho-physical phenomena to tests and standards valid only for material phenomena is a most false and unsatisfactory method. Moreover, the physical scientist is for the most part resolved not to admit what cannot be neatly packed and labelled and docketed in his own system and its formulas. Dr. Jules Romains, himself a scientist as well as a great writer, makes experiments to prove that man
can see and read 
with the eyes blindfolded, the scientists refuse even to admit or record the results. Khuda Baksh comes along and proves it patently, indubitably, under all legitimate tests, the scientists are quite unwilling to cede and record the fact even though his results are undeniable. He walks on fire unhurt and disproves all hitherto suggested explanations,– they simply cast about for another and still more silly explanation! What is the use of trying to convince people who are determined not to believe?
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.