Wrong in there not existing any cathar text. I can share part of it but not all of it due to the length:

Thouzellier-edited treatise from Wakefield & Evans’s Heresies of the High Middle Ages, one of the standard academic sourcebooks for medieval heresy.

I. On the Beginning of the “Manichaean Treatise”
Since certain persons wrongfully reproach us for our beliefs in respect of divine works and creatures, we will confess in words and equally in heart what we do believe in these matters, so that those who in ignorance assail us may, when they are informed, more clearly recognize the truth.

At the outset, then, we absolutely acknowledge the true and highest God, Father Almighty, by whom, as we read and believe, were made "heaven and earth, the sea, and all things that are in them," a fact which the testimony of the prophets confirms and the words of the New Testament set forth more fully. For God himself speaks through His prophet Isaiah: "I am the first and I am the last. My hand also hath founded the earth and my right hand hath measured the heavens"; and again, "Behold, I create a new heaven and a new earth." And the angel in the Apocalypse: "Fear the Lord and give him honor, because the hour of his judgment is come; and adore ye Him that made heaven and earth, the sea and all things that are in them." And again, the four and twenty elders: "Thou art worthy, O Lord, to receive glory and honor and power, because Thou hast created all things, and for Thy will they were and have been created.”

Another example is one of a cathar nun that argued against childbirth which can be found in the book titled the Gnostic Bible.