爱让彼此找到方向。

The ability to associate depends, in turn, on the degree to which communities share norms and values and are able to subordinate individual interests to those of larger groups.

宇宙不允许完美。

自己有善德，才能要求别人行善。

思想需要书来磨砺，正如宝剑需要磨刀石。