解释：第一次击鼓能振作士兵们的勇气，第二次击鼓可以使士兵们的勇气低落，第三次击鼓士兵们的勇气就消失了。

Your attitude, not your aptitude, will determine your altitude.

唯一不变的是变化，持续的变化，不可避免的变化，这是当今社会的主导因素。

机遇青睐有准备的头脑。

The clouds over the land now rose like mountains, and the coast was only a long green line with the gray blue hills behind it. The water was a dark blue now, so dark that it was almost purple.