There is no man, however wise, who has not at some period of his youth said things, or lived in a way the consciousness of which is so unpleasant to him in later life that he would gladly, if he could, expunge it from his memory.

当我看着这个世界时，我是悲观的，但当我看着人们时，我是乐观的。

如果没有正确应用的智慧，最先进的技术也毫无用处。

存在是一种风险，但不存在也是一种风险。