3rd century
Plato. Quoted in Lives and Opinions of Eminent Philosophers, written by Diogenes Laertius. c. 240 AD, bk. 3, sect. 86.
Plato. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 3, sect. 86.
Epicurus. Quoted in Lives and Opinions of Eminent Philosophers, written by Diogenes Laertius. c. 240 AD, bk. 10, ch. 1, sect. 140.
Epicurus. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 10, ch. 1, sect. 140.
Longus. Δάφνις καὶ Χλόη [Daphnis and Chloe]. c. 250, preface.
Longus. Daphnis and Chloe, translated by Ronald McCail. Oxford University Press, 2009, preface.
Zeno. Quoted in The Lives and Opinions of Eminent Philosophers, written by Diogenes Laërtius. c. 240 AD, bk. 7, ch. 1, sect. 87.
Zeno. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 7, ch. 1, sect. 87.
Bion. Quoted in The Lives and Opinions of Eminent Philosophers, written by Diogenes Laërtius. c. 240 AD, bk. 4, ch. 7, sect. 47.
Bion. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 4, ch. 7, sect. 47.
Plotinus. The Six Enneads. c. 270, bk. 2, treatise 3.
Plotinus. The Enneads, edited by Lloyd P. Gerson, translated by George Boys-Stones, et. al. Cambridge University Press, 2018, bk. 2, treatise 3.