Theophylact of Ohrid

Do not only keep in mind whether you eat with a clean conscience, but also whether your action edifies your brother. In many places in his epistles he sets this forth as a matter of the utmost necessity. He does not forbid seeking one's own benefit in general, but only when it is harmful to a brother. For in such a case we must place his benefit above our own and choose it.

Commentary on 1 Corinthians ↗

Clement of Alexandria

And for those who are aiming at perfection there is proposed the rational gnosis, the foundation of which is "the sacred Triad." "Faith, hope, love; but the greatest of these is love." Truly, "all things are lawful, but all things are not expedient," says the apostle: "all things are lawful for me, but all things edify not." And, "Let no one seek his own advantage, but also that of his neighbour," so as to be able at once to do and to teach, building and building up.

The Stromata Book 4 ↗