The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

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.

没有行动的理想只是梦想。

Every tree planted today is a promise to tomorrow.

The only thing necessary for the triumph of evil is for good men to do nothing.