1. Like the river Ganges: presto.

  2. Like the tortoise: lento.

  3. Like the frog: staccato.

  4. Pages 54⁠–⁠55 of Schopenhauer’s Basis of Morality, translated by Arthur B. Bullock, M.A. (1903).

  5. An expression from Schiller’s William Tell, Act IV, Scene 3.

  6. Horace’s Epistles, I, X, 24.

  7. Goethe’s Faust, Part II, Act V.