Mathematics is not a spectator sport. You have to get involved.
数学不是一项观赏性运动。你必须参与其中。
Diplomacy is to make your enemy your friend, not to make your friend your enemy.
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.
人生的真正价值在于超越自我,为他人创造价值。