Nobel laureate, Holocaust survivor and peace advocate Elie Wiesel has seen the best -- and worst -- of human nature, and he believes that the greatest offering any one person can give to humanity is the gift of friendship. 'To me, friendship is a religion,' he tells Oprah Winfrey in this clip from 'Super Soul Sunday.' 'We couldn't live without it. Perhaps we could live for a while without love, but not without friendship.' 'Super Soul Sunday' airs Sunday mornings on OWN.