| Respectfully Quoted: A Dictionary of Quotations. 1989. | | | |
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| | | NUMBER: | 1096 |
| AUTHOR: | Karl Augustus Menninger (18931990) |
| QUOTATION: | Unrest of spirit is a mark of life; one problem after another presents itself and in the solving of them we can find our greatest pleasure. |
| ATTRIBUTION: | KARL MENNINGER, Take Your Choice, This Week Magazine, October 16, 1949, p. 2. |
| SUBJECTS: | Life |
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