If you worried about falling off the bike, you'd never get on.
I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That’s how I’ve gotten to where I am.
伟大来自于坚持和努力。
现代化学家不满足于仅仅成为化合物的制造者;他必须是自然的解释者。