计算复杂性的研究告诉我们，有些问题本质上是困难的，无论我们的算法多么聪明。

La verdadera madurez comienza cuando aceptamos que nunca terminamos de crecer.

A people without children would face a hopeless future; a country without trees would face a future with even less hope.

Golf is a game of inches. The most important are the six inches between your ears.

我不相信运气，我相信努力。