我们今天种植的每一棵树都是为我们永远不会见到的后代留下的遗产。
Psychology must be based on observable facts, not speculation.
每一个伟大的数学理论最初都是异端邪说,最终却成了教条。
Success is not about how much money you make, it's about the difference you make in people's lives.
Beliefs have the power to create and the power to destroy.