Josef Pieper (1904–1997) German philosopher
The Goethe quote is from his Maximen und Reflexionen, ed. Günther Müller (Stuttgart, 1943), no. 1415. The other quote is from Hermann Rauschning's Conversations with Hitler (Gespräche mit Hitler, 1940).
Source: Leisure, the Basis of Culture (1948), Leisure, the Basis of Culture, p. 14