The elegance of a mathematical proof is in its simplicity and clarity.

Change your conception of yourself and you will change your world.

成为人类就是在世界中存在，而在世界中存在就是在时间中存在。

Make women rational creatures, and free citizens, and they will quickly become good wives and mothers.

历史不是过去——它是我们组织对过去无知的方法。