The Lives and Opinions of Eminent Philosophers

You send me word that many people are plotting against you; but if you were to think of putting everyone of them out of the way, you would do no good; but some one whom you do not suspect would still plot against you, partly because he would fear for himself, and partly out of dislike to you for fearing all sorts of things; and he would think, too, that he would make the city grateful to him, even if you were not suspected. It is better, therefore, to abstain from the tyranny, in order to escape from blame. But if you absolutely must be a tyrant, then you had better provide for having a foreign force in the city superior to that of the citizens; and then no one need be formidable to you, nor need you put any one out of the way.