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what shall I do with Diodotus the Stoic, whose pupil I have been from a boy, who has been my associate for so many years, who lives in my house, whom I both admire and love, and who despises the doctrines of Antiochus that you are putting forward? ‘Our doctrines,’ you will say, ‘are the only true ones.’ If they are true, certainly they are the only true ones, for there cannot be several true systems disagreeing with one another. Then is it we that are shameless, who do not wish to make a slip, or they presumptuous, who have persuaded themselves that they alone know everything?

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Речта трябва да произтича и да се развива от познание върху предмета. Ако ораторът не го е обхванал и изучил, то всяко красноречие е напразно, детинско усилие.

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The best Armour of Old Age is a well spent life preceding it; a Life employed in the Pursuit of useful Knowledge, in honourable Actions and the Practice of Virtue; in which he who labours to improve himself from his Youth, will in Age reap the happiest Fruits of them; not only because these never leave a Man, not even in the extremest Old Age; but because a Conscience bearing Witness that our Life was well-spent, together with the Remembrance of past good Actions, yields an unspeakable Comfort to the Soul