Book 2.15
"That you may be sure," says our opponent, "that anger has in it something noble, pray look at the free nations, such as the Germans and Scythians, who are especially prone to anger." The reason of this is that stout and daring intellects are liable to anger before they are tamed by discipline; for some passions engraft themselves upon the better class of dispositions only, just as good land, even when waste, grows strong brushwood, and the trees are tall which stand upon a fertile soil. In like manner, dispositions which are naturally bold produce irritability, and, being hot and fiery, have no mean or trivial qualities, but their energy is misdirected, as happens with all those who without training come to the front by their natural advantages alone, whose minds, unless they be brought under control, degenerate from a courageous temper into habits of rashness and reckless daring. "What? are not milder spirits linked with gentler vices, such as tenderness of heart, love, and bashfulness?" Yes, and therefore I can often point out to you a good disposition by its own faults: yet their being the proofs of a superior nature does not prevent their being vices. Moreover, all those nations which are free because they are wild, like lions or wolves, cannot command any more than they can obey: for the strength of their intellect is not civilized, but fierce and unmanageable: now, no one is able to rule unless he is also able to be ruled. Consequently, the empire of the world has almost always remained in the hands of those nations who enjoy a milder climate. Those who dwell near the frozen north have uncivilized temper
"Just on the model of their native skies,"
as the poet has it.