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Mr. Stanley used some very strong arguments in favour of my going home, recruiting my strength, getting artificial teeth, and then returning to finish my task; but my judgment said, "All your friends will wish you to make a complete work of the exploration of the sources of the Nile before you retire." My daughter Agnes says, "Much as I wish you to come home, I would rather that you finished your work to your own satisfaction than return merely to gratify me." Rightly and nobly said, my darling Nannie. Vanity whispers pretty loudly, "She is a chip of the old block." My blessing on her and all the rest.
”
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David Livingstone (The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death: 1869-1873)