Sri Aurobindo
Letters of Sri Aurobindo
2. The Mother, Sri Aurobindo and the Integral Yoga
Mother was doing Yoga before she knew or met Sri Aurobindo; but their lines of sadhana independently followed the same course. When they met, they helped each other in perfecting the 
sadhana. What is known as Sri Aurobindo’s Yoga is the joint creation of Sri Aurobindo and the Mother; they are now completely identified – the sadhana in the Asram and all arrangement is done directly by the Mother, Sri Aurobindo supports her from behind. All who come here for practising Yoga have to surrender themselves to the Mother who helps them always and builds up their spiritual life.
Undated