Thought is the servant of action, and action is the servant of survival.
实现明天的唯一限制将是我们今天的疑虑。
The world is a great fire, and we are the sparks.
教育体系是以感官基础,以思考为过程,以自由为目的。
"I don't think about being the best. I think about improving every day."
对自然的研究是永恒的乐趣。