To live without joy is the privilege of the just.

真正的理解来自于把握问题的内在结构关系

You have to believe in yourself when no one else does.

体育必须是全人类和各社会阶层的共同遗产。

A mathematician is a device for turning coffee into theorems.

You must have the eyes of an abyss to gaze into the abyss.

The ruling class has the means of material production at its disposal; the proletariat has nothing but their labor power.