Samuel Johnson, Arthur Murphy (1837). “Lives of the poets. Lives of eminent persons. Political tracts. Philological tracts. Miscellaneous tracts. Dedications. Opinions on questions of law. Reviews and criticisms. Journey to the Western islands of Scotland. Prayers and meditations”, p.363
Friedrich Nietzsche (2016). “BEYOND GOOD AND EVIL - Prelude to a Philosophy of the Future: The Critique of the Traditional Morality and the Philosophy of the Past”, p.52, e-artnow