Clement of Alexandria The Instructor Book II For the saying, "It is not a good tree which produces corrupt fruit, nor a corrupt tree which produces good fruit,"[116] Tertullian Against Hermogenes How occurs the seed of what is good, nay, very good, in that which is evil, nay, very evil? Surely a good tree does not produce evil fruit,[131] Origen de Principiis Book II They again recall us, however, to the words of Scripture, by bringing forward that celebrated question of theirs, affirming that it is written, "A bad tree cannot produce good fruits; for a tree is known by its fruit."[65] Hippolytus Refutation of All Heresies Book X For it is requisite that the things made should be similar to the maker; wherefore also they thus employ the evangelical parables, saying, "A good tree cannot bring forth evil fruit,"[19] Archelaus Acts of the Disputation with the Heresiarch Manes namely, that "a good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit."[22] For who ought to be believed? Should it be those masters of yours whose enjoyment is in the flesh, and who pamper themselves with the richest delights; or our Saviour Jesus Christ, who says, as it is written in the book of the Gospels, "A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit,"[101]