Plato: No true statesman looks only, or first of all, to external warfare
Translated by Benjamin Jowett
Athenian Stranger: But war, whether external or civil, is not the best, and the need of either is to be deprecated; but peace with one another, and good will, are best. Nor is the victory of the state over itself to be regarded as a really good thing, but as a necessity; a man might as well say that the body was in the best state when sick and purged by medicine, forgetting that there is also a state of the body which needs no purge. And in like manner no one can be a true statesman, whether he aims at the happiness of the individual or state, who looks only, or first of all, to external warfare; nor will he ever be a sound legislator who orders peace for the sake of war, and not war for the sake of peace.