Falsity is a judgment of things, and judgment only is given by the intellect. That is, falsity is not in things for things are real and they are whatever they are. Now there are true and false we determine about things in order for them to be false, or, not being what they should. “A seal shouldn’t be wearing a t-shirt” is an example. That is one sort of false in which a thing is false by cause – by its accidents – those things we know about things and thus can judge. The other is a misrepresentation of a thing, like a false testimony.
The knowledge we gain comes from sense knowledge and cannot be false. It is because the falsity comes in our judgment that we know this to be true. We might make decisions of information our senses give us, but that information might be misused or defective, but it is never the thing and our senses that are/is false. Descartes made a big issue on this, thinking that just cause he could think, that is the only thing he could trust (“I think therefore I am”) but he was just an inch from the truth. He missed the fact that there are such things as illusions to the senses, which throw our judgment off, but again, it is our judgment and not the actual thing that is thrown. Because God is truth, there is no falsity in the Divine mind. Therein also, falsity is the contrary of truth, its opposite. They are opposite as contraries, not as contradictions. For falsity is not the negating of truth, but is the misrepresentation of truth (a wrongful judgement).
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