创新不是对每件事都说“是”，而是对所有非关键特性说“不”。

The soul of a place is often hidden in its silence.

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

他在主张杠杆原理时所说。

Virtue can only flourish amongst equals.

The fight against hunger is a fight for justice.

教育的根是苦的，但果实是甜的。