Not, as Epicurus put it in the same letter, ‘for the purpose of having someone to come and sit beside his bed when he is ill or come to his rescue when he is hard up or thrown into chains’, but so that on the contrary he may have someone by whose sickbed he himself may sit or whom he may himself release when that person is held prisoner by hostile hands. Anyone thinking of his own interests and seeking out friendship with this in view is making a great mistake. Things will end as they began; he has secured a friend who is going to come to his aid if captivity threatens: at the first clank of a
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