Do not burn yourselves out. Be as I am - a reluctant enthusiast... a part-time crusader, a half-hearted fanatic. Save the other half of yourselves and your lives for pleasure and adventure.

My notion of a great novel is something like a five-hundred-page shaggy-dog story, with only the punch line omitted.

The rifle and handgun are 'equalizers' -- the weapons of a democracy. Tanks and bombers represent dictatorship.

Do I believe in ghosts? I believe in the ghosts that haunt the human mind.

Power is always dangerous. Power attracts the worst and corrupts the best.

I do not believe in personal immortality; it seems so unnecessary. Show me one man who deserves to live forever.

Pure science is a myth: Both mathematical theoreticians like Albert Einstein and practical crackpots like Henry Ford dealt with different aspects of the same world.