Ecclesiastes 6:7 in the King James Version
All the labour of man is for his mouth, and yet the appetite is not filled.
Context
6 Yes, though he live a thousand years twice told, and yet fails to enjoy good, don’t all go to one place?
7 All the labor of man is for his mouth, and yet the appetite is not filled.
8 For what advantage has the wise more than the fool? What has the poor man, that knows how to walk before the living?