battle between two wolves

An old Cherokee told his grandson:
"My son, there's a battle between two wolves inside us all.
On is Evil. It's anger, jelousy, greed, resentment, inferiority, lies and ego.
The other is Good. It's joy, peace, love, hope, humility, kindess, and truth."
The boy thought about it, and asked:
"Grandfather, which wolf wins?"
The old man quietly replied:
"The one you feed."