| Simpsons Contemporary Quotations, compiled by James B. Simpson. 1988. |
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| NUMBER: | 3008 |
| AUTHOR: | Dr Karl A Menninger |
| QUOTATION: | To know thyself must mean to know the malignancy of ones own instincts and to know, as well, ones power to deflect it. |
| ATTRIBUTION: | Vogue Jun 61 |
| SUBJECTS: | The World: Medicine: Psychiatry & Psychology |
| BIOGRAPHY: | Columbia Encyclopedia. |
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