Man has been driven out of the paradise in which he could trust his instincts.

Humor and knowledge are the two great hopes of our culture.

Truth in science can be defined as the working hypothesis best suited to open the way to the next better one.

Most people have forgotten how to live with living creatures, with living systems and that, in turn, is the reason why man, whenever he comes into contact with nature, threatens to kill the natural system in which and from which he live.

The distance at which all shooting weapons take effect screens the killer against the stimulus sensation which would otherwise activate his killing inhibitions. The deep, emotional layers of our personality simply do not register the fact that the crooking of the finger to release a shot tears the entrails of another man.

I have found the missing link between the higher ape and civilized man; it is we.

More than any other product of human scientific culture scientific knowledge is the collective property of all mankind.