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

Science is about understanding the world, and medicine is about applying that understanding to help people.

儿童擅长在自由活动中建立规律。

人生中最难的事情是知道该跨过哪座桥，该烧掉哪座桥。

你可以想错，但无论如何要为自己思考。