• If there is anything in the world that can really be called a man's property, it is surely that which is the result of his mental activity.

    Arthur Schopenhauer: If there is anything in the world that can really be called a man's property, it is surely that which is the result of his mental activity.
    "Respectfully Quoted: A Dictionary of Quotations" edited Suzy Platt, Library of Congress, (p. 227), 1993.