I used to think the world was broken down by tribes. Then I thought it was broken down by rich and poor. Then I thought it was broken down by stupid and smart. But I know now that it is broken down by people who are alive and people who are dead.

I don't compete with anyone but myself.

最好的领导者是那些既听取团队意见又听取批评意见的人。

儿童的一切教育都必须遵循一个原则，即帮助孩子身心自然的发展。