Wisdom deprives even poverty of half its power.

Most men had rather say a smart thing than do a good one. John P. Kotter, Leading Change.

Learning sleeps and snores in libraries, but wisdom is everywhere, wide awake, on tiptoe.

Method is the arithmetic of success.

A witty writer is like a porcupine; his quill makes no distinction between friend and foe.

Life is like a mountain: after climbing up one side and sliding down the other, put up the sled.

Man isn't a fool for his ignorance, but rather for believing things that are wrong.