Man is the child of customs, not the child of his ancestors. Ibn Khaldun More Quotes by Ibn Khaldun More Quotes From Ibn Khaldun Beyond [known peoples of black West Africa] to the south there is no civilization in the proper sense. There are only humans who are closer to dumb animals than to rational beings. They live in thickets and caves, and eat herbs and unprepared grain. They frequently eat each other. They cannot be considered human beings. Ibn Khaldun dumb animal civilization Eventually, Aristotle appeared among the Greeks. He improved the methods of logic and systematized its problems and details. He assigned to logic its proper place as the first philosophical discipline and the introduction to philosophy. Therefore he is called the First Teacher. Ibn Khaldun philosophical teacher philosophy The sciences of only one nation, the Greeks, have come down to us, because they were translated through Al-Ma'mun's efforts. He was successful in this direction because he had many translators at his disposal and spent much money in this connection. Ibn Khaldun effort greek successful