In programming when you're making a change you have to know all the affected places, and you have to be able to model in your head what the performance impact will be.

If you believe that all men are created equal, then a child's death in some other country is no less tragic than in the United States.

People care a lot that the USA is well run, and people globally expect us to do things in upgrading science and more.

Patience is a key element of success.

The Gates Foundation has learned that two questions can predict how much kids learn: 'Does your teacher use class time well?' and, 'When you're confused, does your teacher help you get straightened out?'

Most people overestimate what they can do in one year and underestimate what they can do in ten years.

If you are born poor its not your mistake, But if you die poor its your mistake.