The parable of the two wolves.
Once upon a time, an old Indian revealed to his grandson a vital truth.

— In every person there is a struggle, very similar to the struggle of two wolves. One wolf represents evil — envy, jealousy, regret, selfishness, ambition, lies... The other wolf represents good — peace, love, hope, truth, kindness, loyalty...

The little Indian, touched to the core by his grandfather's words, thought for a few moments, and then asked:
— Which wolf wins in the end?"

The old Indian smiled faintly and answered:
— The wolf you feed always wins.