William Penn (1793). “Fruits of a Father's Love: being the Advice of William Penn to his children, relating to their civil and religious conduct, etc. With a preface, signed J. R., i.e. Sir John Rodes”, p.4
William Penn (1807). “Fruits of solitude in reflections and maxims relating to the conduct of human life: Also, his advice to his children relating to their civil and religious conduct, to which are added extracts from the writings of William Law & Judge Hale; with a "Description of the happy man & true gentleman."”, p.28