Small actions, when multiplied by millions of users, can change the world.
小行动，当乘以数百万用户时，可以改变世界。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
One isn't born one's self. One is born with mass of expectations, a mass of other people's ideas.
心灵是一个协调感觉的系统。