A prime number is one (which is) measured by a unit alone.

The laws of nature are but the mathematical thoughts of God.

Things which are equal to the same thing are also equal to one another.

A line is length without breadth.

In right-angled triangles the square on the side subtending the right angle is equal to the squares on the sides containing the right angle.

Sire, there is no royal road to geometry.

Better balance, less pain and less restless leg syndrome.

Give him threepence, since he must make a gain out of what he learns.

And the whole is greater than the part.

A straight line is said to have been cut in extreme and mean ratio when, as the whole line is to the greater segment, so is the greater to the lesser.

Kids need to open up to their parents. And parents should realize that when kids are pushing you away, that's the time to really step in.

All men think they're fascinating. In my case, it's justified.

I've never been happy doing stock work; I've never been happy thinking that I haven't changed something.

I'm sorry to keep focusing on the New Yorker, but everybody who was growing up when Calvin [Trillin] and I were growing up wanted to be published in the New Yorker.

When you're in prison, and we're left to our own devices, you're stripped of everything, and you really get to see who these people are, the good and the bad.

Knowledge was more powerful than fear. Love was stronger than hate.

Family is just accident.... They don't mean to get on your nerves. They don't even mean to be your family, they just are.

I've been to North Africa many times.

In any form of attack it is essential to assail your opponent from behind.

Let us see God before man every day.