The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

我知道自己是聪明的，因为我知道自己一无所知。

I don't think about being the best. I think about being better than yesterday.

The only limit to our realization of tomorrow will be our doubts of today.

每个家庭都是一个团结的小社会，自由和相互之间的感情是他们唯一的纽带。