Even so, we should speak not of darkness but of a somewhat blurred light, deceptive in its apparent clarity, and hiding more than it reveals: it seems to us, in fact, that we know all there is to be known about Classical knowledge if we understand that it is rationalistic, that, since Galileo and Descartes, it has accorded an absolute privilege to Mechanism, that it presupposes a general ordering of nature, that it accepts the possibility of an analysis sufficiently radical to discover elements or origins, but that it already has a presentiment, beyond and despite all these concepts of understanding, of the movement of life, of the density of history, and of the disorder, so difficult to master, in nature.