This is an extract of my thesis degree and I put it "online" for two reasons: - It is the beginning, the starting point of my humanist works (New Humanism and Sartre's Moral with Appendix on Enlightenment) which explain in synthesis the European culture of our age. - History discovers that falling of men is a falling in the transcendence. From creator of men and of gods, the man is fallen in the transcendence, in the condition to be, himself, created and consequently in state of alienation and without his freedom. The laborious restarting of man in order to reconquer his humanity needs a method that History offers to him. This method, of sartrian origin, is founded on the inner being of historical facts which, on the contrary, would remain at level of historiography, i.e. without discovering no essence or dialectic. I named this inner being "discovered childhood" because childhood is the latent part of man who contains in himself the whole dimension of personality. Discovering this unknown ground means understand essence of History and consequently of man who can finally become again master of his own destiny.