The Bhagavad Geeta: c16.v21: The Divine And Demoniac Natures

tri-vidham narakasyedam
dvaram nasanam atmanah
kamah krodhas tatha lobhas
tasmad etat trayam tyajet

Synonyms
tri-vidham-three kinds of; narakasya-hellish; idam-this; dvaram-gate; nasanam-destructive; atmanah-of the self; kamah-lust; krodhah-anger; tatha-as well as; lobhah-greed; tasmat-therefore; etat-these; trayam-three; tyajet-must give up.

Translation
There are three gates leading to this hell:

lust, anger and greed.

Every sane man should give these up,

for they lead to the degradation of the soul.

Puport
The beginning of demoniac life is described herein.

One tries to satisfy his lust, and when he cannot, anger and greed arise.

A sane man who does not want to glide down to the species of demoniac life

must try to give up these three enemies

which can kill the self to such an extent

that there will be no possibility of liberation

from this material entanglement.

Dharma Deck: Defense

Defense
One should defeat an angry man with meekness, an evil one with goodness, a miser with genorosity and a liar with truth.
- Mahabharata