One should not give up on any Jew; for there is bound to be some strand of yiddishkeit that connects even to one who is wicked. If a bucket falls into a deep well, one can still retrieve the bucket from the depths, as long as its connected by a rope. It doesnt matter how thick or thin the rope is: just as long as theres a line of connection.

- R. Yisrael of Ruzhin -