You are never too old to set another goal or to dream a new dream.

幸福来自之间。它不是你可以直接找到、获得或实现的东西。你必须创造合适的条件，然后等待。

The idea of a multiverse is a natural consequence of inflation, suggesting that our universe might be just one of many.

你做得越多，学到的就越多。你学到的越多，你能做的就越多。