The world is a book, and those who do not travel read only one page.

The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.

The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

The moment the child is born, stimuli begin to play upon him.

Lisp语言被设计成可扩展的，很容易为其添加新功能。

There are two kinds of violence of peace， that is the law and etiquette.

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.

当遗憾取代梦想时，一个人才算老了。

如果一件事情对你很重要，即使成功的概率很小，你也应该去做。