世界不会记住你说过什么，但会记住你做过什么。
Make women rational creatures, and free citizens, and they will quickly become good wives, and mothers; that is, if men do not neglect the duties of husbands and fathers.
"The truth may set you free, but first it will break you."
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
The best books are those that make you see the world anew.