Out of the night, the dawn,

 Out of my heart, with all its woes,
 High courage to press on.--Laura Lee Randall

Overcoming difficulties leads to courage, self-respect, and knowing yourself.--Alfred Adler 

The paradox of courage is that a man must be a little careless of his life even in order to keep it.--G. K. Chesterton (All Things Considered)

Physical courage, which despises all danger, will make a man brave in one way; and moral courage, which despises all opinion, will make a man brave in another. The former would seem most necessary for the camp, the latter for council; but to constitute a great man, both are necessary.—-Charles Caleb Colton 

The secret of freedom, courage.--Thucydides