Havamal

A greedy man, if he be not moderate, eats to his mortal sorrow. Oftentimes his belly draws laughter on a silly man, who among the prudent comes.

Gröðugr halr nema geðs viti etr sér aldrtrega opt fær hlœgis er með horskum kømr manni heimskum magi

Havamal: 20, Gestaþáttr