What is the first business of philosophy? To part with self-conceit. For it is impossible for anyone to begin to learn what he thinks that he already knows. – Epictetus, Discourses
Nature, more of a stepmother than a mother in several ways, has sown a seed of evil in the hearts of mortals, especially in the more thoughtful men, which makes them dissatisfied with their own lot and envious of another s. – Desiderius Erasmus