Adolf Kneser, Georg Landsberg and Jakob Rosanes were among his mathematics teachers but Courant still found that, for him, their courses lacked excitement.
Miaka Kneser, Georg Landsberg Rosanes at Jakob ay kabilang sa kanyang mga guro sa matematika ngunit Courant pa rin nahanap na, para sa kanya, sa kanilang mga kurso lacked pagkatakot.