Thought is not a gift to man but a laborious, precarious and volatile acquisition.

The common man, finding himself in a world so excellent, technically and socially, believes it has been produced by nature, and never thinks of the personal efforts of highly endowed individuals which the creation of this new world presupposed. Still less will he admit the notion that all these facilities still require the support of certain difficult human virtues, the least failure of which would cause the rapid disappearance of the whole magnificent edifice.

Life is a struggle with things to maintain itself among them. Concepts are the strategic plan we form in answer to the attack.

Why write if this too easy activity of pushing a pen across paper is not given a certain bullfighting risk and we do not approach dangerous, agile and two-horned topics?

Stupefaction, when it persists, becomes stupidity.

He who wishes to teach us a truth should not tell it to us, but simply suggest it with a brief gesture, a gesture which starts an ideal trajectory in the air along which we glide until we find ourselves at the feet of the new truth.

When you are fed up with the troublesome present, you take your gun, whistle for your dog, go out to the mountain, and, without further ado, give yourself the pleasure during a few hours or a few days of being "Paleolithic."