Sri Aurobindo
Letters of Sri Aurobindo
Volume I - Part 5
Fragment ID: 10772
The Mother only speaks to people about their past births when she sees definitely some scene or memory of their past in concentration; but this happens rarely nowadays.
What is remembered mainly from past lives is the nature of the personality and the subtle results of the life-experience. Names, events, physical details are remembered only under exceptional circumstances and are of a very minor importance. When people try to remember these outward things, they usually build up a number of romantic imaginations which are not true.
I think you should dismiss this idea about the past lives. If the memory of past personalities comes of itself (without a name or mere outward details) that is sometimes important as giving a clue to something in the present development, but to know the nature of that personality and its share in the present constitution of the character is quite enough. The rest is of little use.