Sem

“A man is never happy, but spends his whole life in striving after something that he thinks will make him so; he seldom attains his goal, and when he does, it is only to be disappointed; he is mostly shipwrecked in the end, and comes into harbour with mast and rigging gone. And then, it is all one whether he is happy or miserable; for his life was never anything more than a present moment always vanishing; and now it is over.”
― Arthur Schopenhauer, Studies in Pessimism: The Essays

“God has entrusted me with myself. No man is free who is not master of himself. A man should so live that his happiness shall depend as little as possible on external things. The world turns aside to let any man pass who knows where he is going.”
― Epictetus