Men of lofty genius when they are doing the least work are most active.
(Leonardo da Vinci)

"Everything in the world exists to end up in a book."
(Stéphane Mallarmé)

"I taught them everything they know, but not everything I know."
(James Brown)

"If you can’t explain to a 5 year-old what you’re doing, you don’t know what you’re doing."
(Robert D. Ballard, Discoverer of HMS Titanic, Speaking at a conference at the National Geographic Society in Washington, Nov. 4, 2003)

"It is better of course to know useless things than to know nothing."
(Tom Stoppard)

"It is better, of course, to know useless things than to know nothing."
(Seneca, 4 BC-65 AD)

"Never mistake knowledge for wisdom. One helps you make a living; the other helps you make a life."
(Sandra Carey)

"No statement can be profound once it has been repeated by others."
(William Thomas)

"Real knowledge is to know the extent of one's ignorance."
(Confucius, 551 BC-479)

"Recursive, adj.; see Recursive."
(Anonymous, from a ThinkGeek.com customer)