Arithmetic is where the answer is right and everything is nice and you can look out of the window and see the blue sky-or the answer is wrong and you have to start all over and try again and see how it comes out this time.

A man has one hundred dollars and you leave him with two dollars, that's subtraction.

By studying the masters-not their pupils.

Among mathematicians, the real world is a special case.

Mathematics is the bell-boy of all sciences.

Mathematics is the door and key to the sciences.

Most geometricians, chemists, mathematicians, and great scientists submit religion to reason only to discover a problem as unsolvable as that of squaring a circle.

We used to think that if we knew one, we knew two, because one and one are two. We are finding that we must learn a great deal more about "and."

A line is length without breadth.

QED - Quod erat demonstrandum.