| 其他書名 | On the Nature of Things ; Transl. by H.A.J. Munro. The Discourses of Epictetus ; Transl. by George Long. The Meditations of Marcus Aurelius ; Transl. by George Long |
| 出版 | Encyclopaedia Britannica, 1952 |
| URL | http://books.google.com.hk/books?id=L5fmswEACAAJ&hl=&source=gbs_api |