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The process of doing mathematics is as important as the result itself.
Whatever you're meant to do, do it now. The conditions are always impossible.
如果你能梦想它,你就能实现它。
世界上最昂贵的东西是信任。赢得信任可能需要数年,而失去它可能只需要几秒钟。
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.