Horatio Nelson's advice to his Midshipmen (1793) as quoted in "Memoirs of the Life of Vice-Admiral, Lord Viscount Nelson, K.B., Duke of Bronte, Etc., Etc., Etc, Volume 2" edited by Thomas Joseph Pettigrew (p. 580), 1849.
Mahatma Gandhi (1965). “Glorious Thoughts of Gandhi: Being a Treasury of about Ten Thousand Valuable and Inspiring Thougths of Mahatma Gandhi, Classified Under Four Hundred Subjects”