Sri Aurobindo's, The Life Divine: Part 10 - Spiritual Change with The Mother's Commentaries
"But this is not the standpoint from which the true significance of the spiritual evolution in man or the value of spirituality can be judged or assessed; for its real work is not to solve human problems on the past or present mental basis, but to create a new foundation of our being and our life and knowledge. The solution of the problem which spirituality offers is not a solution by external means, though these also have to be used, but by an inner change, a transformation of the consciousness and nature." - Sri Aurobindo