Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 5
Fragment ID: 10807
I do not know what you mean by practical sadhana. If one develops the occult faculty and the occult experience and knowledge, these things can be of great use, therefore practical. In themselves they are a proof of opening of the inner consciousness and also help to open it farther – though they are not indispensable for that.