Thomas Aquinas, like many other, but by no means all medieval theologians and philosophers, espoused a theory of truth by identity. Truth exists primarily in the mind, but insofar as it realises the truth of things, truth exists in things also. Both truth and meaning are inherent to form, which shines forth in things to render them as things, or as exemplars of universal essences. In the event and act of knowledge, form as species migrates from things into one's mind by a process involving at once passive stamping, active abstraction, and imaginative mediation. To know in this manner is to manifest, and express further the truth of things which is intrinsic to their very being. It is not merely to think logically or coherently, or to judge correctly as to evidence, though these things are certainly involved. Nor is it to ‘represent’ in a detached fashion a supposedly objective reality that is in itself alien to meaning or truthfulness.