The price of freedom is eternal vigilance.

The greatest use of life is to spend it for something that will outlast it.

"Weonly live once, Snoopy.""Wrong. We only die once. We live every day."

物理学和数学之间的界限并不像人们想象的那么清晰。

Never forget what you are, for surely the world will not. Make it your strength. Then it can never be your weakness. Armor yourself in it, and it will never be used to hurt you.

森林不仅仅是资源，它们是地球的肺，也是我们对抗气候变化的最佳防线。

思考是最艰难的工作，这可能是为什么如此少的人从事它。