1:14 Commandments of men - The Jewish or other teachers, whoever they were that turned from the truth.

Titus 1:14 Parallel Commentaries

Whether all Ecclesiastical Prelates are in the State of Perfection?
Objection 1: It would seem that all ecclesiastical prelates are in a state of perfection. For Jerome commenting on Titus 1:5, "Ordain . . . in every city," etc. says: "Formerly priest was the same as bishop," and afterwards he adds: "Just as priests know that by the custom of the Church they are subject to the one who is placed over them, so too, bishops should recognize that, by custom rather than by the very ordinance of our Lord, they are above the priests, and are together the rightful governors …
Saint Thomas Aquinas—Summa Theologica

Whether He that is Appointed to the Episcopate Ought to be Better than Others?
Objection 1: It would seem that one who is appointed to the episcopate ought to be better than others. For our Lord, when about to commit the pastoral office to Peter, asked him if he loved Him more than the others. Now a man is the better through loving God the more. Therefore it would seem that one ought not to be appointed to the episcopal office except he be better than others. Objection 2: Further, Pope Symmachus says (can. Vilissimus I, qu. 1): "A man is of very little worth who though excelling …
Saint Thomas Aquinas—Summa Theologica

Whether Chastity is a Distinct virtue from Abstinence?
Objection 1: It would seem that chastity is not a distinct virtue from abstinence. Because where the matter is generically the same, one virtue suffices. Now it would seem that things pertaining to the same sense are of one genus. Therefore, since pleasures of the palate which are the matter of abstinence, and venereal pleasures which are the matter of chastity, pertain to the touch, it seems that chastity is not a distinct virtue from abstinence. Objection 2: Further, the Philosopher (Ethic. iii, …
Saint Thomas Aquinas—Summa Theologica