Man is by nature a reasonable being, but animals, other than man, are by nature instruments of brute force.
The most important thing is to retain your identity and not try to be something you're not.
在化学中，就像在生活中一样，最具变革性的反应往往发生在学科之间的边界上。
我不是那种会让我的承诺失效的人。
A miner's skill and dedication are just as valuable as the coal they bring to the surface.