The writer must be a perpetual questioner, a doubter of all certainties.

You get what you give. What you put into things is what you get out of them.

Faith is a living, daring confidence in God's grace, so sure and certain that a man could stake his life on it a thousand times.

我们唯一需要害怕的就是害怕本身。

Mental activity is always directed toward some end.

Success is a lousy teacher. It seduces smart people into thinking they can't lose.

解读：健康是人生基石，一旦失去健康，再多财富、名誉都无福消受，警示人们莫因一时贪念，损害身体，权衡利弊时，把健康放首位。