138. Sen. ad Helv. 1. c.; Ep. lxxviii. 1. Dion. Cass. lix. 19.
139. 5 Dion. Cass. 1. c.
140. Suet. Calig. 53. See ch. i. p. 4.
141. Ep. cviii. 17 sqq.; Hioronym. ad ann. 2029. That he knew and never lost his respect for the teaching of Pythagoras is shown by the frequency with which he quotes him in the letters.
142. Ep. cviii. 3 sqq.
143. Cp. the speech of Suillius, Tac. Ann. xiii. 42; Dion. Cass. lxi. 10.
144. ad Helv. de Cons. 6 sqq.
145. ad Polyb. de Cons.
146. The Apocolocyntosis—almost undoubtedly by Seneca—hardly falls within the scope of this work. Such intrinsic importance as it possesses is due to the prose portions. In point of form it is an example of the Menippean Satire, that strange medley of prose and verse. The verse portions form but a small proportion of the whole and are insipid and lacking in interest.
147. He was forbidden by Agrippina to give definite philosophical instruction. Cp. Suet. Nero, 52.