A snake can be charmed by sound vibration 'mantra'or herbs, but the man, most envious, is more dangerous than the snake.
When we become proud, we think that we deserve so much. When we do not get much of what we want, we naturally become envious.
Nature of Envy is to take quality and interpret and re-interpret.
People's criticizing others is an exhibition of their envy to GOD.
Animalistic envy exists in human society as long as there is no performance of sankirtana-yajna.
Purport on Srimad Bhagavatam on 4.30.35
Sarcasm is just a manifestation of our hidden envy.