De Veritate, prout distinguitur a revelatione, a verisimili, a possibili, et a falso is the major work of Edward Herbert, 1st Baron Herbert of Cherbury. He published it in 1624 on the advice of Grotius.
De Veritate combines a theory of knowledge with a partial psychology, a methodology for the investigation of truth, and a scheme of natural religion. The author's method is prolix and often far from clear; the book is no compact system, but it contains the skeleton and much of the soul of a complete philosophy. Giving up all past theories as useless, Herbert professedly endeavours to constitute a new and true system. Truth, which he defines as a just conformation of the faculties with one another and with their objects, he distributed into four classes or stages:
truth in the thing or the truth of the object;
truth of the appearance;
truth of the apprehension (conceptus);
truth of the intellect.
The faculties of the mind are as numerous as the differences of