Bidden or unbidden, God is present. - Desiderius Erasmus
Unbidden, Unwelcome, Yet unable to resist, I entered a stranger's life - Joyce Carol Oates
Soon or late, every dog's master's memory becomes a graveyard; peopled by wistful little furry ghosts that creep back unbidden, at times, to a semblance of their olden lives. - Albert Payson Terhune