失败是有教益的。真正思考的人从失败中学到的东西和从成功中学到的一样多。
The past is a mirror in which we see ourselves reflected.
纯数学在某种程度上是逻辑思想的诗歌。
"The credibility of your results depends on the plausibility of your identifying assumptions."
Your life changes the moment you make a new, congruent, and committed decision.