Think like a man of action, and act like a man of thought.

An absolute can only be given in an intuition, while all the rest has to do with analysis.

To exist is to change, to change is to mature, to mature is to go on creating oneself endlessly.

I see plainly how external images influence the image that I call my body: they transmit movement to it.

The pure present is an ungraspable advance of the past devouring the future. In truth, all sensation is already memory.

Religion is to mysticism what popularization is to science.