Being human signifies, for each one of us, belonging to a class, a society, a country, a continent and a civilization; and for us European earth-dwellers, the adventure played out in the heart of the New World signifies in the first place that it was not our world and that we bear responsibility for the crime of its destruction.

Civilization has ceased to be that delicate flower which was preserved and painstakingly cultivated in one or two sheltered areas of a soil rich in wild species ... Mankind has opted for monoculture; it is in the process of creating a mass civilization, as beetroot is grown in the mass. Henceforth, man's daily bill of fare will consist only of this one item.

Animals are good to think with.

The musical emotion springs precisely from the fact that at each moment the composer withholds or adds more or less than the listener anticipates on the basis of a pattern that he thinks he can guess, but that he is incapable of wholly divining. . . .

With all its technical sophistication, the photographic camera remains a coarse device compared to the human hand and brain.

Our students wanted to know everything: but only the newest theory seemed to them worth bothering with. Knowing nothing of the intellectual achievements of the past, they kept fresh and intact their enthusiasm for 'the latest thing'. Fashion dominated their interest: they valued ideas not for themselves but for the prestige that they could wring from them.

The scientist is not a person who gives the right answers, he is one who asks the right questions.