Security and privacy are fundamental to the trust that users place in the Internet.

The best way to learn mathematics is to do mathematics.

The worth of a psychological theory is measured by its usefulness.

目标决定你将成为什么样的人。

孔子说：“不到苦思冥想时，不去提醒；不到欲说无语时，不去引导。不能举一例能理解三个类似的问题，就不要再教他了。”

Today is cruel, tomorrow is crueler, and the day after tomorrow is beautiful, but most people die tomorrow night, so don't give up today.

我唯一害怕的是上帝。