最强者也不能总是强大得足以永远作主人，除非他能把力量转化为权利和服从的义务。

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。

罗马大军入侵时，阿基米德的家遭士兵破门而入，他还在醉心研究圆形，后来他被士兵杀害。及后，杀阿基米德的士兵也被处决。

I'm not a legend, I'm just a man who became one.

Becoming fearless isn't the point. That's impossible. It's learning how to control your fear, and how to be free from it.

The main difference between me and other people who have amassed this kind of money is that I am primarily interested in ideas, and not in making money.