The history of mathematics is a testament to the ingenuity and creativity of the human mind.
有谁背后没被他人议论过,又有谁在他人面前没议论过别人?有钱人不管说什么,别人都奉承他说的是真的,而穷人即使说的是真话,别人也都不相信是真话。
The hardest part of any challenge is taking the first step.
The only limit to our realization of tomorrow will be our doubts of today.