Ecclesiastes 6:7

To the corrupting power of riches [the Lord] made the enormity of voracious appetite antecedent; indeed, the former generates the latter.

"All man's toil is for his mouth, yet his wants are never satisfied. What advantage then has the wise man over the fool? What less has the pauper who knows how to conduct himself among the living?" All that men toil at in this world is consumed by the mouth and taken to be digested in the stomach after it has been ground down by the teeth. And when a little bit has pleased the palette, it seems to create a desire, so long as it is held in the mouth. But when it has passed down to the stomach the difference between foods is no longer distinguishable. And after all these things the spirit of a man who eats is not filled up; or then he desires again what he has eaten, and is as wise as the fool without food, who does not know how to live, and the poor man asks for nothing else but for how he is to sustain the organs of his meagre body, and not die through starvation. Or because the spirit takes no gain from the food of the body, and food is of equal use to a wise man and a fool, and the pauper wanders therefrom, to where he has seen wealth to be. This is better understood regarding a man of the church, who learned in the heavenly Scriptures, holds all his toil in his mouth yet his spirit is not filled, for he always desires to learn. And in that respect the wise man has more than the fool, since when he feels himself to be poor, he presses that pauper, who is called blessed in the Gospel, to understand those things which are of life, and walks the restricted and narrow path, which leads to life, and he is poor from wicked deeds and knows where Christ, (who is life) is to be found.

"All man's toil is for his mouth, yet his wants are never satisfied. What advantage then has the wise man over the fool? What less has the pauper who knows how to conduct himself among the living? "All that men toil at in this world is consumed by the mouth and taken to be digested in the stomach after it has been ground down by the teeth. And when a little bit has pleased the palette, it seems to create a desire, so long as it is held in the mouth.

The rich man reveals the great burning in his tongue when he says, "Send Lazarus to dip the end of his finger in water and cool my tongue, since I am tormented in this flame." The unbelieving people keep the words of the law in their mouths but refuse to act on them. The burning will be greater in the place where they manifested that they knew what to do, but that they were unwilling to do it. Solomon said concerning those who are knowledgeable but remiss, "All the toil of a man is in his mouth, but his soul will not be filled." Whoever labors only for this, to know what he should say, fasts with an empty heart from the nourishment that should provide him with knowledge.

A person's true life is not found here on earth, for he claims that it is found elsewhere. This, then, is the great advantage humankind has over the animal: The animal does not live on after death, while a person begins to live only when he has completed this visible life through bodily death.