Avoid connecting yourself with characters whose good and bad...

Avoid connecting yourself with characters whose good and bad sides are unmixed and have not fermented together; they resemble vials of vinegar and oil; or palletts set with colors; they are either excellent at home and insufferable abroad, or intolerable within doors and excellent in public; they are unfit for friendship, merely because their stamina, their ingredients of character are too single, too much apart; let them be finely ground up with each other, and they are incomparable.