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

在数学科学中，比其他任何学科都更常见的是，那些一度最抽象、似乎远离一切实际应用的真理，在下一个时代会成为深刻物理研究的基础，并最终体现在某些实用发明中。

The greatest lessons come from the hardest struggles.

Quality is not an act, it is a habit.

The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.

We must listen to the science and act with urgency to address global energy challenges.

【译文】 孔子说：“君子团结群众而不拉帮结派，小人拉帮结派而不团结群众。”