Ecclesiastes 6:7 in the World English Bible
All the labor of man is for his mouth, and yet the appetite is not filled.
Context
6 Yea, though he live a thousand years twice told, yet hath he seen no good: do not all go to one place?
7 All the labour of man is for his mouth, and yet the appetite is not filled.
8 For what hath the wise more than the fool? what hath the poor, that knoweth to walk before the living?