成功不是终点,失败也不是致命的:重要的是继续前进的勇气。
Success is not final, failure is not fatal: It is the courage to continue that counts.
In mathematics, you don't understand things. You just get used to them.
当我们谈论一个词的“意义”时,首先我们在谈论一种特定的行为。
爱得越多,评判得越少。
书是一次跨越时间的对话。