If a man will begin with certainties， he shall end in doubts； but if he will be content to begin with doubts， he shall end in certainties.
化学中最重要的工具不是烧杯或光谱仪，而是想象力。
麦克斯韦方程式不足以设计电动机不是计算机的错。
事实是：自然界正在变化。而我们完全依赖那个世界。它提供我们的食物、水和空气。它是我们拥有的最宝贵的东西，我们需要捍卫它。
"The past is never dead. It's not even past."
The biggest mistake you can make is thinking you know everything.
Everyone is shy. Other people are waiting for you to introduce yourself to them， they are waiting for you to send them an email， they are waiting for you to ask them on a date. Go ahead.
The cosmos is all that is or ever was or ever will be.
You miss 100% of the shots you don't take.
The success of any political system depends on its ability to generate legitimacy in the eyes of its citizens.