John Chrysostom, on 1Cor 10:23

“All things are lawful for me, but all things do not edify.”

“"All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not. Let no man seek his own, but each his neighbor's good." Seest thou his exact wisdom? Because it was likely that they might say, "I am perfect and master of myself, and it does me no harm to partake of what is set before me;" "Even so," saith he, "perfect thou art and master of thyself; do not however look to this, but whether the result involve not injury, nay subversion." For both these he mentioned, saying, "All things are not expedient, all things edify not;" and using the former with reference to one's self, the latter, to one's brother: since the clause, "are not expedient," is a covert intimation of the ruin of the person to whom he speaks; but the clause, "edify not," of the stumbling block to the brother. Wherefore also he adds, "Let no man seek his own;" which he every where through the whole Epistle insists upon and in that to the Romans; when he says, "For even Christ pleased not Himself:" and again, "Even as I please all men in all things, not seeking mine own profit." And again in this place; he does not, however, fully work it out here. That is, since in what had gone before he had established it at length, and shown that he no where "seeks his own," but both "to the Jews became as a Jew and to them that are without law as without law," and used not his own "liberty" and "right" at random, but to the profit of all, serving all; he here broke off, content with a few words, by these few guiding them to the remembrance of all which had been said.”

Imported from an open dataset — not yet checked against the printed edition.