„Truth means the fulfilment of our self; and moral law means following the law of our being. Truth is the beginning and end (the substance) of material existence. Without truth there is no material existence. It is for this reason that the moral man values truth.
Truth is not only the fulfilment of our own being; it is that by which things outside of us have an existence. The fulfilment of our being is moral sense. The fulfilment of the nature of things outside of us is intellect. These, moral sense and intellect, are the powers or faculties of our being. They combine the inner or subjective and outer or objective use of the power of the mind. Therefore, with truth, everything done is right.“
The Doctrine of the Mean, p. 124