I don't look in the mirror often..

"I noticed you have no mirrors," I said.
"They serve no purpose," he told me.
"Because they're mostly for vanity?" I questioned.
"More than that," he answered. "Those who've marred their appearance in any way by their actions in life aren't forced to witness that marring. If they were, they'd become self-conscious and be unable to concentrate on improving themselves."

-from the book What dreams may come