But he does not even swear, preferring to make averment, in affirmation by “yea,” and in denial by “nay.” For it is an oath to swear, or to produce anything from the mind in the way of confirmation in the shape of an oath. It suffices then, with him, to add to an affirmation or denial the expression “I say truly,” for confirmation to those who do not perceive the certainty of his answer. For he ought, I think, to maintain a life calculated to inspire confidence towards those without, so that an oath may not even be asked; and towards himself and those with whom he associates, good feeling, which is voluntary righteousness.