Passions, Stoic theory of, opposed, iii. 6.3 (26-355)

Passions, their avoidance, task of philosophy, iii. 6.5 (26-358).

Passions, what suitable to earth, iv. 4.22 (28-471).

Passive, really, is soul, when swayed by appetites, iii. 1.9 (3-98).

Path of simplification to unity, vi. 9.3 (9-152).