[53] These ten disjointed reflections on happiness remind us of Porphyry's questioning habit, without which, Plotinos said, he might have had nothing to write; see Biography, 13.
[54] As Epicurus thought the divinities alone enjoyed perfect happiness, Diog. Laert. x. 121.
[55] See Aristotle, Nic. Ethics, 1.10.
[56] See Cicero, de Finibus, ii. 27–29.
[57] See iii. 7.
[58] Plutarch, Dogm. Philos. i. 17; Stob. Eclog. i. 18.
[59] Arist. Topic. iv. 2; de Gener. et Cor. i. 10; Ravaisson, EMA, i. 422.
[60] As did Alexander of Aphrodisias, in his treatise on "Mixture;" Ravaisson, EMA, ii. 297.
[61] Stob. Eclog. i. 18.
[62] See Plutarch, "Whether Wickedness Renders One Unhappy."