I turn away with fright and horror from the lamentable evil of functions which do not have derivatives.

In mathematics our role is more that of servant than master.

Analysis takes back with one hand what it gives with the other. I recoil in fear and loathing from that deplorable evil: continuous functions with no derivatives.

We are servants rather than masters in mathematics.

Abel has left mathematicians something to keep them busy for five hundred years.

Children are like soft petals. One wrong pluck and they are damaged forever.

You owe it to yourself to constantly experience the priceless feeling that comes with turning a great idea into reality.

The basis of a democratic state is liberty

It was kind of unexpected, to wake up one day and realize that the things that you've worked so hard to accomplish, you've accomplished in so little an amount of time.

What do you do with what you're given, and how do you transform it into something worthwhile?

By [age] 93, I had shrunk quite a lot. My car was known as the Phantom Cadillac. People would see it whizzing by and they would swear there was no driver.

The freedom to kill is not a true freedom, but a tyranny that reduces human beings to slavery.

Beware of the conversationalist who adds "In other words."

In thigh-high yellow leather boots Plump Saphonisba strides. Too bad that, just to hide her calves, Two calves have lost their hides.