Ecclesiastes 4:5 - Ellicott's Commentary On The Whole Bible

Eateth his own flesh. — Interpreters have usually taken these words metaphorically, as in Psalms 27:2; Isaiah 49:26; Micah 3:3, and understood them as a condemnation of the sluggard’s conduct as suicidal. But it has been proposed, taking the verse in connection with that which precedes and those which follow, to understand them literally, “eats his meat;” the sense being that, considering the emulation and envy involved in all successful exertion, one is tempted to say that the sluggard does better who eats his meat in quiet. There is, however, no exact parallel to the phrase “eats his flesh;” and I think that if the latter were the meaning intended, it would have been formally introduced in some such way as, “Wherefore I praised the sluggard.” Adopting, then, the ancient interpretation, we understand the course of conduct recommended to be the golden mean between the ruinous sloth of the fool and the vexatious toil of the ambitious man.