"Ability will never catch up with the demand for it."

"When in doubt, duck."

"Education's purpose is to replace an empty mind with an open one."

"There is never enough time, unless you're serving it."

"If you don't know what to do with many of the papers piled on your desk, stick a dozen colleagues' initials on 'em, and pass them along. When in doubt, route."

"By the time we've made it, we've had it."

"When you don't know what you are doing, you don't know when to quit."

"O, what may man within him hide, though angel on the outward side!"

"It is the act of a madman to pursue impossibilities."

"He of whom many are afraid ought to fear many."

"And many strokes, though with a little axe, Hew down and fell the hardest-timbered oak."

"Courage is an accumulation of small steps."