These memoirs were written by Saint John Bosco towards the end of his life. His own words are - "Now, what purpose can this chronicle serve? It will be a record to help people overcome problems that may come in the future by learning from the past. It will serve to make known how God himself has always been our guide. It will give my sons some entertainment to be able to read about their father’s adventures. Doubtless they will be read much more avidly when I have been called by God to render my account, when I am no longer among them.Should they come upon experiences related maybe with complacency or the appearance of vainglory, let them indulge me a little. A father delights in speaking of his exploits to his dear children. It is always to be hoped that the sons will draw from these adventures, small and great, some spiritual and temporal advantage.I have chosen to divide my account into ten-year periods, because each decade saw a notable development of our work.So, my dear children, when you read these memoirs after my death, remember that you had a loving father who left these memoirs as a pledge of fatherly affection before he abandoned this world. And remembering that, pray for the happy repose of my soul."