The machine does not isolate man from the great problems of nature but plunges him more deeply into them.

The notion of looking on at life has always been hateful to me. What am I if I am not a participant? In order to be, I must participate.

When the body sinks into death, the essence of man is revealed. Man is a knot, a web, a mesh into which relationships are tied. Only those relationships matter. The body is an old crock that nobody will miss. I have never known a man to think of himself when dying. Never.

One runs the risk of weeping a little, if one lets himself be tamed.

The field of consciousness is tiny. It accepts only one problem at a time.

Truth is not that which is demonstrable but that which is ineluctable.

One must require from each one the duty which each one can perform. Accepted authority rests first of all on reason.