I'm an indoors person. I'm not afraid of the outdoors and I penetrate it easily and cheerfully. However, I must admit I like Central Park better than the wilderness, and I like the canyons of Manhattan better than Central Park, and I like the interior of my apartment better than the canyons of Manhattan, and I like my two rooms better with the shades down at all times than with the shades up. I'm not an agoraphobe at all, but I am a claustrophile, if you see the distinction.

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.

Mathematicians deal with large numbers sometimes, but never in their income.

If you have talent, you will receive some measure of success - but only if you persist.

It is not only the living who are killed in war.

What would I do if I knew I only had six months to live? Type faster.

Experimentation is the least arrogant method of gaining knowledge. The experimenter humbly asks a question of nature.