What are a few similarities between Scout's father, Atticus, and Elie's father, Shlomo?

Both characters are very different and exist in different contexts. Atticus is an idealist and intellectually practical. Atticus is part of the white dominant society in a place where he can help someone who isn't. Elie's father seems intelligent but is merely trying to survive in a society that despises him. Both characters and situations are so radically different.