Johann Wolfgang von Goethe Quotes about Sleep
Hypotheses are lullabies for teachers to sing their students to sleep.
Johann Wolfgang von Goethe (1963). “Goethe's world view: presented in his reflections and maxims”
Johann Wolfgang von Goethe, Johann Peter Eckermann (2014). “Conversations of Goethe with Johann Peter Eckermann”, p.230, Ravenio Books