First Published in 1999. Readers will find in this book no direct analysis of child morality as it is practised in home and school life or in children's societies. It is the moral judgment that we propose to investigate, not moral behaviour or sentiments. With this aim in view, a large number of children from the Geneva and Neuchatel schools were questioned and held conversations with them, similar to those we had had before on their conception of the world and of causality. The present volume contains the results of these conversations.