Eirenaios

Today is the feast of St. Irenaeus of Lyons (c. 130 - c. 200). He is remembered as a martyr, but we have no significant traditions about his death. From Adversus Haereses, Book V, Chapter 20:

Those, therefore, who desert the preaching of the Church, call in question the knowledge of the holy presbyters, not taking into consideration of how much greater consequence is a religious man, even in a private station, than a blasphemous and impudent sophist. Now, such are all the heretics, and those who imagine that they have hit upon something more beyond the truth, so that by following those things already mentioned, proceeding on their way variously, inharmoniously, and foolishly, not keeping always to the same opinions with regard to the same things, as blind men are led by the blind, they shall deservedly fall into the ditch of ignorance lying in their path, ever seeking and never finding out the truth. It behooves us, therefore, to avoid their doctrines, and to take careful heed lest we suffer any injury from them; but to flee to the Church, and be brought up in her bosom, and be nourished with the Lord's Scriptures. For the Church has been planted as a garden (paradisus) in this world; therefore says the Spirit of God, "You may freely eat from every tree of the garden," that is, Eat from every Scripture of the Lord; but you shall not eat with an uplifted mind, nor touch any heretical discord. For these men do profess that they have themselves the knowledge of good and evil; and they set their own impious minds above the God who made them. They therefore form opinions on what is beyond the limits of the understanding. For this cause also the apostle says, "Be not wise beyond what it is fitting to be wise, but be wise prudently," that we be not cast forth by eating of the "knowledge" of these men (that knowledge which knows more than it should do) from the paradise of life. Into this paradise the Lord has introduced those who obey His call, "summing up in Himself all things which are in heaven, and which are on earth;" but the things in heaven are spiritual, while those on earth constitute the dispensation in human nature (secundum hominem est dispositio).