Adam Clarke on Psalms 49:20

Man that is in honor - The rich and honorable man who has no spiritual understanding, is a beast in the sight of God. The spirit of this maxim is, A man who is in a dignified official situation, but destitute of learning and sound sense, is like a beast. The important place which he occupies reflects no honor upon him, but is disgraced by him. Who has not read the fable of the beautifully carved head? It was every thing that it should be, but had no brains.

This verse has been often quoted as a proof of the fall of man; and from ילין yalin, (in Psa 49:12), which signifies to lodge for a night, it has been inferred that Adam fell on the same day on which he was created, and that he did not spend a single night in the terrestrial paradise. Adam, who was in a state of glory, did not remain in it one night, but became stupid and ignorant as the beasts which perish. But we may rest assured this is no meaning of the text.