数学是一门活生生的学科，随着新的思想和发现不断演变。

我们可以断言，没有激情，任何伟大的事业都不能完成。

The more one judges, the less one loves.

The only reason for time is so that everything doesn't happen at once.

Documentation is like term insurance: It satisfies because almost no one who subscribes to it depends on its benefits.

The first man who， having enclosed a piece of ground， bethought himself of saying 'This is mine，' and found people simple enough to believe him， was the real founder of civil society.