The virtue of a faculty is related to the special function which that faculty performs. Now there are three elements in the soul which control action and the attainment of truth: namely, Sensation, Intellect, and Desire. Of these, Sensation never originates action, as is shown by the fact that animals have sensation but are not capable of action.
AristotleFor through wondering human beings now and in the beginning have been led to philosophizing.
AristotleOf cases where a man is truthful both in speech and conduct when no considerations of honesty come in, from an habitual sincerity of disposition. Such sincerity may be esteemed a moral excellence; for the lover of truth, who is truthful even when nothing depends on it, will a fortiori be truthful when some interest is at stake, since having all along avoided falsehood for its own sake, he will assuredly avoid it when it is morally base; and this is a disposition that we praise.
Aristotle