Homo homini lupus, or in its unabridged form Homo homini lupus est, is a Latin proverb meaning literally 'man is a wolf to man'. It is used to refer to situations where a person has behaved comparably
Maximilian Pirner painted Homo homini lupus in 1901. It is an allegorical satire, showing a winged figure, which represents imagination, being crucified by monkeys before a crowd of other beasts.
The Joker's distinctive grin, seen here in art by Alex Ross, was inspired by Veidt's role as Gwynplaine