 ... it at once struck me that under these circumstances favourable variations would tend to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here, then, I had at last got a theory by which...  Social Evolution - Page 34by Benjamin Kidd - 1894 - 348 pagesFull view - About this book
 | Charles Darwin - 1887 - 586 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a theory by which to work ; but I was so anxious to avoid prejudice, that I determined not for some time to write even the briefest... | |
 | Charles Darwin - 1887 - 588 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a theory by which to work ; but I was so anxious to avoid prejudice, that I determined not for some time to write even the briefest... | |
 | Charles Darwin - 1887 - 570 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a theory by which to work ; but I was so anxious to avoid prejudice, that I determined not for some time to write even the briefest... | |
 | William Parker Cutler - 1888 - 1034 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a theory by which to work ; . but I was so anxious to avoid prejudice, that I determined not for some time to write even the... | |
 | 1888 - 386 pages
...to be preserved and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here, then, I had at last got a theory by which to work ; but I was so anxious to avoid * LETTERS OF DAVID RICARDO TO THOMAS ROBERT MALTHUS : 1810-1823. Edited... | |
 | Thomas Robert Malthus, George Thomas Bettany - 1890 - 714 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here, then, I had at last got a theory by which to work." (Now that it is very generally recognised that this struggle for existence, with survival of the fittest,... | |
 | Charles Darwin - 1892 - 372 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here, then, I had at last got a theory by which to work ; but I was so anxious to avoid prejudice, that I determined not for some time lo write even the briefest... | |
 | Ainsworth Rand Spofford - 1895 - 476 pages
...to be preserved, and unfavorable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a theory by which to work ; but I was so anxious to avoid prejudice that I determined not for some time to write even the briefest... | |
 | Charles Darwin - 1896 - 580 pages
...to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here then I had at last got a . theory by which to work ; but I was so anxious to avoid prejudice, that I determined not for some time to write even the briefest... | |
 | Frank Cramer - 1896 - 246 pages
...variations would be preserved and unfavorable ones destroyed. The result of this would be the formation of new species. Here, then, I had at last got a theory by which to work. " 1 1 Life and Letters, Vol. I. p. 68. It is not recorded at what point in his reading of Malthus it... | |
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