What I have now said, then, is offered not for the purpose of cavilling with any right opinions or sound doctrines held even by Greeks, but with the desire of showing that the same things, and indeed much better and diviner things than these, have been said by those divine men, the prophets of God and the apostles of Jesus. These truths are fully investigated by all who wish to attain a perfect knowledge of Christianity, and who know that “the mouth of the righteous speaks wisdom, and his tongue talks of judgment; the law of his God is in his heart.” But even in regard to those who, either from deficiency or knowledge or want of inclination, or from not having Jesus to lead them to a rational view of religion, have not gone into these deep questions, we find that they believe in the Most High God, and in His Only-begotten Son, the Word and God, and that they often exhibit in their character a high degree of gravity, of purity, and integrity; while those who call themselves wise have despised these virtues, and have wallowed in the filth of sodomy, in lawless lust, “men with men working that which is unseemly.”
Source: Against Celsus (New Advent)