The cowboys have a way of trussing up a steer or a pugnacious bronco which fixes the brute so that it can neither move nor think. This is the hog-tie, and it is what Euclid did to geometry. – Eric Bell, The Search for Truth

How many times can you subtract 7 from 83, and what is left afterwards? You can subtract it as many times as you want, and it leaves 76 every time. – Author Unknown

Arithmetic is numbers you squeeze from your head to your hand to your pencil to your paper till you get the answer. – Carl Sandburg, "Arithmetic"

Proof is an idol before whom the pure mathematician tortures himself. – Arthur Stanley Eddington, The Nature of the Physical World