Epicurus On Truth And Falsehood: Statements by Sextus Empiricus / Article By Brown

I am not confident that we should rely either on this writer or on Sextus Empiricus for a correct interpretation of Epicurus' views on "truth," but the material collected here is certainly something to consider, especially the paragraph where Sextus Empiricus is allegedly attempting to describe Epicurus' view on the subject. Full PDF is attached but I have clipped what appear to be the most relevant quotes. Most of the rest of the article is very complex speculation on the part of Bown.

This post comes about, and is related to, this discussion here: References to Epicurus' Attitude Toward The "Place of the Sciences And Liberal Arts"

Also from the letter to Herodotus:

Quote

Now falsehood and error always lie in the addition of opinion with regard to what is waiting to be confirmed or not contradicted, and then is not confirmed or is contradicted.

For the similarity between the things which exist, which we call real and the images received as a likeness of things and produced either in sleep or through some other acts of apprehension on the part of the mind or the other instruments of judgment, could never be, unless there were some effluences of this nature actually brought into contact with our senses.

And error would not exist unless another kind of movement too were produced inside ourselves, closely linked to the apprehension of images, but differing from it; and it is owing to this, supposing it is not confirmed, or is contradicted, that falsehood arises; but if it is confirmed or not contradicted, it is true.

Therefore we must do our best to keep this doctrine in mind, in order that on the one hand the standards of judgment dependent on the clear visions may not be undermined, and on the other error may not be as firmly established as truth and so throw all into confusion.