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| Simpson’s Contemporary Quotations, compiled by James B. Simpson. 1988. |
| NUMBER: | 2878 |
| AUTHOR: | Dr Jonas Salk |
| QUOTATION: | It is courage based on confidence, not daring, and it is confidence based on experience. |
| ATTRIBUTION: | On administering the experimental vaccine for polio to himself and his wife and three sons, news summaries 9 May 55 |
| SUBJECTS: | The World: Medicine: Physicians & the Medical World |
| BIOGRAPHY: | Columbia Encyclopedia. |
| Simpson’s Contemporary Quotations, compiled by James B. Simpson. Copyright © 1988 by James B. Simpson. Published by the Houghton Mifflin Company. All rights reserved. | ||||
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