French Abstract: Les économistes ont coutume de distinguer entre une composante positive et une composante normative de leurs travaux, ce qui est une singularité de leur discipline, car cette distinction n'a pas de répondant exact dans les autres sciences sociales. Elle a fortement évolué...

This fascinating biography of an economist who was also a logician and administrator, is based mainly upon his virtually continuous diary. The diary provides an intimate commentary on the academic developments and conflicts in which he was closely involved as well as on his life as...