 These artists and philosophers not only introduced Frankl to new systems of thinking, such as Gestalt psychology, but also to his future wife, the artist and musician, Elsa Herzberg, who shared a studio with Käthe Kollwitz.Frankl and Herzberg eventually had five children.In 1908, Frankl left his work as an architect to study philosophy, history, and art history at the Ludwig-Maximilians-Universität in Munich under Heinrich Wölfflin and Berthold Riehl, the founder of the Institut für Kunstgeschichte.