As its author states, this is a book dedicated to the important subject, especially for psychoanalysis, of the relationship between sense and nonsense, between reason and madness, between reason and knowledge. The subject is dealt with from the point of view of the oscillatory movement between “prelogical thinking and logical thinking, between keeping the illusion and going beyond it”(pp. 19-20). It is also — we may say immediately — a very interesting essay on the philosopher Friedrich Nietzsche: a psychobiographical essay, in an exquisitely psychoanalytic key, skilfully drawn by a profound expert and scholar of the figure and the work of the German philosopher.

The first chapter about bonds and freedom of thought is a lively and well-founded polemic with the conventional modalities to explain the processes of