That man, I think, has had a liberal education who has been so trained in youth that his body is the ready servant of his will.  

我不介意犯错，我只是不想一直错下去。

地球的历史镌刻在它的岩石中。

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.