Sir Thomas Browne (1844). “Religio Medici. Its sequel, Christian Morals ... With resemblant passages from Cowper's Task, and a verbal index. [Edited by John Peace.]”, p.121
Socrates, Plato, Aristotle (1967). “Wit and Wisdom of Socrates, Plato, Aristotle: Being a Treasury of Thousands of Glorious, Inspiring and Imperishable Thoughts, Views and Observations of the Three Great Greek Philosophers, Classified Under about Four Hundred Subjects for Comparative Study”