History of the Peloponnesian War

"Was this then a friendship or a freedom to put faith in, where we violated our real feelings whenever we treated each other as friends? They courted us in time of war only because they were afraid of us, while we acted in the same manner toward them in time of peace; and good faith, which in most cases is made steadfast by good will, was in our case made secure by fear, and it was fear rather than friendship that held us both to the alliance; and whichever of us should soonest gain boldness through a feeling of security was bound to be the first to commit some act of transgression also.

If, therefore, anyone thinks that, just because they postponed the measures we dread, we do wrong in revolting first, without having waited on our side until we were (quite sure that any of our suspicions would come true, he is in error.

For if we were in a position to meet their plotting by counter-measures on equal terms with them, it was indeed incumbent upon us on our part to postpone likewise our offensive against them; but since the power of attack is always in their hands, the right of acting betimes in our own defence must necessarily be in ours.