| John Bartlett (18201905). Familiar Quotations, 10th ed. 1919. |
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| NUMBER: | 9151 |
| AUTHOR: | Diogenes Laërtius (fl. early 3d cent.) |
| QUOTATION: | Plato having defined man to be a two-legged animal without feathers, Diogenes plucked a cock and brought it into the Academy, and said, This is Platos man. On which account this addition was made to the definition,With broad at nails. |
| ATTRIBUTION: | Diogenes. vi. |
| BIOGRAPHY: | Columbia Encyclopedia. |
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