Winston Churchill's remarks at the Guildhall after the first British naval victory of World War I (September 4, 1914), as quoted in Martin Gilbert "Churchill: A Life" (p. 279), October 15, 1992.
Marcus Aurelius, Epictetus, Lucius Annaeus Seneca (2015). “Stoic Six Pack: Meditations of Marcus Aurelius The Golden Sayings Fragments and Discourses of Epictetus Letters from a Stoic and The Enchiridion”, p.62, Lulu.com