Sri Aurobindo
Letters of Sri Aurobindo
Volume IV - Part 2
It is true about living and doing all for oneself, but that is the 
nature of man, he is centred in his ego, ego-centric, and does all for his ego; even his love and liking is mostly based on ego. All that has to be changed and all has to be centred in the Divine, done for the Divine Mother. It is the work of the sadhana to get that done. The silence, the growth of the psychic and all else is meant to bring about that – but it cannot be done all at once. When the consciousness is ready, then the psychic love, the impulse for self-giving begins to open out in the heart and the change is made – more and more till there is the complete self-giving.