The brain is not a passive recipient of stimuli but an active organizer of perception.

The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success.

作战虽然讲究排兵布阵，但士兵的勇敢是其中的根本;丧葬虽然讲究礼节，但对亲人的哀思是其中的根本;一个人虽然很有学识，但思想道德、行为举止是其中的根本。

"To read is to travel without moving; to write is to move without traveling."

Every problem in mathematics is an opportunity to learn something new.

如果你没有偶尔失败，说明你还不够努力。