It is vain to expect virtue from women till they are, in some degree, independent of men.

Words are wise men's counters, they do but reckon by them; but they are the money of fools.

博物馆应该是论坛，而不是神庙。

我一直喜欢不被注意的感觉。

数学之美在于它的简洁与深度。