Thucydides

A nation that draws too broad a difference between its scholars and its warriors will have its thinking done by cowards, and its fighting done by fools.

The secret of Happiness is Freedom, and the secret of Freedom, Courage.

The bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding, go out to meet it.
Thucydides - Peloponnesian War
We secure our friends not by accepting favors but by doing them.

The sufferings that fate inflicts on us should be borne with patience, what enemies inflict with manly courage.

- Thucydides