"What happens to the hole when the cheese has gone?"

Bertolt Brecht (1898–1956)

"Action without philosophy is a lethal weapon, philosophy without action is worthless."

Soichiro Honda (1906–1991)

"I'm astounded by people who want to 'know' the universe when it's hard enough to find your way around Chinatown."

Woody Allen (1935–)

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe."

Albert Einstein (1879–1955)

"Tell people there's an invisible man in the sky who created the universe, and the vast majority will believe you. Tell them the paint is wet, and they have to touch it to be sure."

George Carlin (1937–2008)

"Doubt is not a pleasant condition, but certainty is absurd."

Voltaire (1694–1778)

"Do not let others hold you back."

Marcus Aurelius (121–180 A.D.)