Siebe

“It is impossible for a man to learn what he thinks he already knows.”
― Epictetus

“Every miserable fool who has nothing at all of which he can be proud, adopts as a last resource pride in the nation to which he belongs; he is ready and happy to defend all its faults and follies tooth and nail, thus reimbursing himself for his own inferiority.”
― Arthur Schopenhauer, Essays and Aphorisms

“A thinker sees his own actions as experiments and questions--as attempts to find out something. Success and failure are for him answers above all.”
― Friedrich Nietzsche

“A man can be himself only so long as he is alone; and if he does not love solitude, he will not love freedom; for it is only when he is alone that he is really free.”
― Arthur Schopenhauer, Essays and Aphorisms