The best thing about getting older is that you don't lose all the other ages you've been.

The secret of change is to focus all of your energy, not on fighting the old, but on building the new.

解释：做大事的不做小事，要成就大事的不成就小事。

Nothing is more precious than independence and liberty.

I'm not perfect, but I'm perfectly me.

La poesía no explica, revela.

代数分析很快让我们忘记了研究的主要对象，因为它将我们的注意力集中在抽象的组合上，直到最后我们才回到最初的目标。