“All the business of war, and indeed all the business of life, is to endeavour to find out what you don’t know by what you do; that’s what I called ‘guessing what was at the other side of the hill.'” — Duke of Wellington

“The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.” — F. Scott Fitzgerald

“It is the mark of an educated mind to be able to entertain a thought without accepting it.” — Aristotle

“Education enables you to express assent or dissent in graduated terms.” — William Cory

“Education is the ability to listen to almost anything without losing your temper or your self-confidence.” — Robert Frost

“To change an opinion without a mental process is the mark of the uneducated.” — Geoffrey Madan

“To have doubted one’s own first principles is the mark of a civilized man.” — Oliver Wendell Holmes

“There is a danger in being persuaded before one understands.” — Thomas Wilson

“The success of most things depends upon knowing how long it will take to succeed.” — Montesquieu

Metaphors for life:

“A theater in which the worst people often have the best seats.” — Aristonymus

“A hospital in which every patient is possessed by the desire to change his bed.” — Charles Baudelaire

“A maze in which we take the wrong turning before we have learned to walk.” — Cyril Connolly

“A garish, unrestful hotel.” — Joseph Conrad

“Like eating artichokes — you’ve got to go through so much to get so little.” — Tad Dorgan

“For most men … a search for the proper manila envelope in which to get themselves filed.” — Clifton Fadiman

“A library owned by an author. In it are a few books which he wrote himself, but most of them were written for him.” — Harry Emerson Fosdick

“An onion, and one peels it crying.” — French proverb

“The only riddle that we shrink from giving up.” — W.S. Gilbert

“Life is something like this trumpet. If you don’t put anything in it, you don’t get anything out.” — W.C. Handy

“A succession of frontispieces. The way to be satisfied is never to look back.” — William Hazlitt

“A long headache in a noisy street.” — John Masefield

“A foreign language: all men mispronounce it.” — Christopher Morley

“A party: one arrives long after it’s started, and one’s going to leave long before it’s over.” — Robert Morley

“Honesty is the best policy: but he who acts on that principle is not an honest man.” — Archbishop Richard Whately

“There is nothing so easily made offensive as good reasoning.” — Sir Arthur Helps

“One of my chief objections to the management of the universe is that we suffer so much more from our gentler and more amiable vices than from our darkest crimes.” — A.E. Housman, letter to Grant Richards, 1913

“It is true that that may hold in these things, which is the general root of superstition; namely, that men observe when things hit, and not when they miss; and commit to memory the one, and forget and pass over the other.” — Francis Bacon