| John Bartlett (18201905). Familiar Quotations, 10th ed. 1919. |
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| NUMBER: | 9115 |
| AUTHOR: | Diogenes Laërtius (fl. early 3d cent.) |
| QUOTATION: | Aristippus being asked what were the most necessary things for well-born boys to learn, said, Those things which they will put in practice when they become men. |
| ATTRIBUTION: | Aristippus. iv. |
| BIOGRAPHY: | Columbia Encyclopedia. |
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