This volume is based on the papers presented at the Jubilee meeting in honour of Evry Schatzman, which was held in the Ministere de I'Enseignement Superieur et de la Recherche, Paris in September 1993. The meeting was highly successful, both as a scientific meeting in its own right, and as a fitting occasion to honour Evry for his lifetime's contribution to physics and astronomy, and to the education and inspiration of generations of students, many of whom were able to participate in the meeting.