书籍是不同世界之间的桥梁。
反射是神经活动最简单和最常见的形式。
The computer revolution hasn't started yet.
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.
生活是10%发生在我们身上的事，90%是我们如何应对这些事。
"The past is a foreign country; they do things differently there."