What’s really important is to question the questions.

Don't be defined by what you didn't know or didn't do.

——1963年6月25日在西德市政厅柏林墙前的演说

The greatest enemy you will ever face is your own human nature—your impatience, your fear, your need for validation.

最终，重要的是工作本身。不是名声或金钱。