Doubt is the beginning of wisdom, not its enemy.

The nose of a mob is its imagination. By this, at any time, it can be quietly led.

The idea of the sacred is quite simply one of the most conservative notions in any society, because it seeks to turn other ideas — uncertainty, progress, change — into crimes.

The unity of mathematics is not an illusion but a reality waiting to be uncovered.

孤独一人也没关系，只要能发自内心地爱着一个人，人生就会有救。哪怕不能和他生活在一起。