I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.

The most damaging phrase in the language is: 'We've always done it this way.'

The most important property of a program is whether it accomplishes the intention of its user.

创新是看到每个人都看到的东西，思考没有人想过的事情。

Success is not final, failure is not fatal: It is the courage to continue that counts.

The purpose of computing is insight, not numbers.