There is, I believe, in every disposition a tendency to some particular evil, a natural defect, which not even the best education can overcome.
我，相信一个人不管是怎样的脾气，都免不了有某种短处，这是一种天生的缺陷，即使受教育受得再好，也还是克服不了。
Don't be afraid to make mistakes, but learn from them quickly.
The world's history is the world's judgment.
数学不是一项观赏性运动。