How to maintain a tranquil mind amongst social upheaval and turmoil, addressed to Serenus. (Introduction by Jonathan Hockey)
Chapters 1 and 2
Jan. 1, 1970
00:18:58
Chapters 3 to 7
00:18:24
Chapters 8 to 12
00:25:06
Chapters 13 to 17
00:20:12
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