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"Mathematics has given economics rigor, but alas, also mortis."

"To secure peace is to prepare for war."

"As I grow older and older, And totter toward the tomb, I find that I care less and less Who goes to bed with whom."

"To know the pains of power, we must go to those who have it; to know its pleasures, we must go to those who are seeking it. The pains of power are real; its pleasures imaginary."

"All that we are is the result of what we have thought. The mind is everything. What we think, we become."

"The question is not what you look at but what you see."

"To err is human; to forgive is simply not our policy"

"At Christmas play and make good cheer, For Christmas comes but once a year."

"Veni, vidi, vici.[I came, I saw, I conquered]"

"From the age of six, I have known that I was sexy. And let me tell you it has been hell, sheer hell, waiting to do something about it."

"If you can fill the unforgiving minute With sixty secondsa€? worth of distance runa€” Yours is the Earth and everything thata€?s in it, Anda€”youa€?ll be a Man, my son!"

"The reason why so few good books are written is that so few people who can write know anything."