Mathematics is a dialogue between the past and the present.
A wise man said: before you speak, let your words pass through three gates. At the first gate, ask yourself, "Is it true?" At the second gate, ask "Is it necessary?" At the third gate, ask, "Is it kind?"
我认为我今天之所以成为我,是因为年轻时经历了那些艰难时期。
Diversity of thought leads to better decision-making and more innovative solutions.