Forests remind us that growth is slow but worth the wait.
森林提醒我们，成长虽慢，但值得等待。
学习数学的唯一方法就是做数学。
摆脱诱惑的唯一方法就是屈服于它。
Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.
组合数学是不用计数的计数艺术。