Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them - and then, the opportunity to choose.

The most important thing in science is not to solve problems, but to ask the right questions.

The past is a foreign country; they do things differently there.

学校是用来培养人才的，但古代圣王的用意并不止于此。

我们的心灵不安，直到在你里面找到宁静。

Be so good they can't ignore you.

Drone safety is not an option, but a baseline.