Template:Course Motto

• In teaching, writing, and research, there is no greater clarifier than a well-chosen example.
• Formalism should not be introduced for its own sake, but only when it is needed for some particular problem.
• He lectures like a master. I have hardly ever heard a man speak with such fascination and brilliance. He knows how to make the most difficult things concrete and intuitively clear. Mathematical arguments are translated by him into easily comprehensible pictures. (Sommerfeld in Ehrenfest’s letter of recommendation).