If you can't mine it safely, you shouldn't mine it at all.
如果你不能安全地开采它,你根本不应该开采它。
The only way to learn mathematics is to do mathematics.
Philosophy is a battle against the bewitchment of our intelligence by means of language.
预测未来的最好方式就是去创造未来。
La palabra es el instrumento más poderoso que tenemos para cambiar el mundo.
质量从来不是偶然的,它始终是智慧努力的结果。