Most men die at twenty or thirty; thereafter they are only reflections of themselves.

战争是一种精神现象。

科学不仅仅是理论；它是关于在现实世界中实现可行的事物。

我不害怕跌倒，因为我知道我会重新站起来。

你必须成为你希望在世界上看到的改变。

My past doesn't define me, it refines me.

领导力是激励他人在曾经看到局限的地方看到可能性。

The dog is a friend of man because it judges him not by his station.