“Alexander to Aristotle, greetings. You have not done well to write down and publish those doctrines you taught me by word of mouth. What advantage shall I have over other men if these theories in which I have been trained are to be made common property? I would rather excel the rest of mankind in my knowledge of what is best than in the extent of my power. Farewell.”
The Age of Alexander, Plutarch, 75 A.C.E. translation by Ian Scott-Kilvert, Penguin Books, 1973.