Morton D. May might have amassed one of the most impressive collections of twentieth-century German art on the planet, but throughout his life he was, first and foremost, a businessman.

Like Matisse and Picasso, Ernst Ludwig Kirchner and Erich Heckel were obsessed with the female nude, as a symbol of their own intense sexuality as well as a seductive return to primitive nature. But ...

in Three-Quarter Profile to the Right)” — and Erich Heckel. Maybe it’s the subject’s high forehead and pointed ear, but Heckel’s “Man in Prayer” suggests the vampire of F.W. Murnau ...