数学中最美丽的东西是复杂背后的简单思想。
当你同时倾听数据和直觉时,才能做出最佳决策。
To be free is not to have the power to do anything you want, but to have the power to do what is right.
追求平等既需要个人的勇气,也需要集体的行动。
Every material has its own memory and history.