最重要的是保持思考，保持质疑。
The most important thing is to keep thinking, keep questioning.
A miner's safety should never be measured in cost-benefit analyses.
I have to be alone very often. I'd be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That's how I refuel.
The key to success is to focus on goals, not obstacles.
晶体管是一个等待被发现的发现。