You know, Doc and … as if they were brothers … coloring … black hair and gray eyes and a darker skin, but Doc has …” They talked on, rambling much. I… - Philip José Farmer

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You know, Doc and … as if they were brothers … coloring … black hair and gray eyes and a darker skin, but Doc has …” They talked on, rambling much. I got the impression that these two octogenarians had known each other intimately for a long long time. They had been through much with each other, and they were very fond of each other. The abuses and insults they loosed at each other were good-natured, indeed, their second natures. And as I listened — read, rather — I understood that they were here on The Last Great Adventure. There had been three other men who had shared their exploits and dangers in the past. But these were dead now. The two old men expected to die soon, but they had insisted on coming to Africa with Caliban, and he had reluctantly agreed.