This volume includes the Mother's responses to letters from six of her disciples, grouped into series. In each episode, questions and answers are presented in chronological order. The first and third series of letters are published in this publication for the first time; the rest were published in whole or in part earlier in the quarterly Bulletin of the Sri Aurobindo International Center for Education. Two of the published series of letters were written in English, while four others were written entirely or mostly in French. Further comments are provided in the notes at the end of the book.