Epictetus, Marcus Aurelius, Lucius Annaeus Seneca (2016). “Stoic Six Pack: Meditations of Marcus Aurelius, Golden Sayings, Fragments and Discourses of Epictetus, Letters from a Stoic and The Enchiridion”, p.95, Enhanced Media Publishing
Margaret Fuller, Arthur Buckminster Fuller (1874). “Woman in the 19th century, and kindred papers relating to the sphere, condition, and duties of woman”, p.72