In Mathematics it is always best to cheat.

A generating function is a clothesline on which we hang up a sequence of numbers for display.

The full beauty of the subject of generating functions emerges only from tuning in on both channels: the discrete and the continuous.

Induction makes you feel guilty for getting something out of nothing, and it is artificial, but it is one of the greatest ideas of civilization.

For every epsilon, there is a delta.

The more you read, the better you are informed.

You have made a heaven across the impassable sky, but the planet Earth where you live have made her worse than hell. Are you humans stupid?

Youth is the first victim of war; the first fruit of peace.It takes 20 years or more of peace to make a man; it takes only 20 seconds of war to destroy him.

My God! Middle Earth does exist!

I didn't want to be a woman photographer. That would limit me. I wanted to be a photographer who was a woman, with all the world open to my camera.

The value of many men and books rests solely on their faculty for compelling all to seek out the most hidden and intimate things.

Do not allow obligation or immediacy to bind you to physical things or specific actions.

Can't be touched, Can't be stopped, Can't be moved, Can't be rocked, Can't be shook.

It took years, honestly, to deal with the disappointment of Beijing.

If all you have is music, then you don't have music