鸟有巢，蜘蛛有网，人有友谊。

技术可以放大优秀教学的效果，但无法替代糟糕的教学。

Always question your assumptions—that's where the most interesting discoveries often lie.

人生的时间是有限并不可变的，所以要有效率地用每一分钟，不用好就是一种浪费。

The true revolutionary is guided by great feelings of love.

真正的创新发生在不同观点和学科的交叉点。

The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man.

只有我们个人对自由的信仰才能让我们保持自由。