Happiness in marriage is entirely a matter of chance.

The meaning of "knowing" has shifted from being able to remember and repeat information to being able to find and use it.

优秀和卓越的区别在于额外的努力。

The periodic table hasn't changed, but how we use its elements must.

在数学中，你不理解事物。你只是习惯了它们。

自由不是任何人可以给予的东西。自由是人们夺取的东西，人们有多自由取决于他们想要多自由。