| The Columbia World of Quotations. 1996. |
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| NUMBER: | 59847 |
| QUOTATION: | To speak or do anything that shall concern mankind, one must speak and act as if well, or from that grain of health which he has left. |
| ATTRIBUTION: | Henry David Thoreau (1817–1862), U.S. philosopher, author, naturalist. Letter, October 18, 1843, to Helen Thoreau, in The Writings of Henry David Thoreau, vol. 6, p. 118, Houghton Mifflin (1906). |
| BIOGRAPHY: | Columbia Encyclopedia. |
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| | | The Columbia World of Quotations. Copyright © 1996 Columbia University Press. |
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