You can't get mad at anybody else for your own mistakes.

劳动分工在尽可能程度上引入，在每一门艺术中都会导致劳动生产力的相应增加。

The deterioration of every government begins with the decay of the principles on which it was founded.

The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

自守表示的研究是进入对称性核心的旅程。