The most important skill in mathematics is the ability to think clearly.
至今一切社会的历史都是阶级斗争的历史,即剥削阶级和被剥削阶级之间、统治阶级和被压迫阶级之间斗争的历史。
If winning becomes too important in a game, change the rules to make it more fun. Changing rules can become the new game.
The poet’s voice is the voice of the outsider looking in.