It is the sense of mystery that, in my opinion, drives the true scientist; the same force, blindly seeing, deafly hearing, unconsciously remembering, that drives the larva into the butterfly. If he has not experienced, at least a few times in his life, this cold shudder down his spine, this confrontation with an immense, invisible face whose breath moves him to tears, he is not a scientist. The blacker the night, the brighter the light.

If at one time or another I have brushed a few colleagues the wrong way, I must apologize: I had not realized that they were covered with fur.

The narrow slit through which the scientist, if he wants to be successful, must view nature constructs, if this goes on for a long time, his entire character; and, more often than not, he ends up becoming what the German language so appropriately calls a Fachidiot (professional idiot).

One of the most insidious and nefarious properties of scientific models is their tendency to take over, and sometimes supplant, reality.