Materialism is the philosophy of the subject who forgets to take account of himself.
Arthur SchopenhauerMany undoubtedly owe their good fortune to the circumstance that they possess a pleasing smile with which they win hearts. Yet these hearts would do better to beware and to learn from Hamlet's tables that one may smile, and smile, and be a villain.
Arthur SchopenhauerThe principle of contradiction establishes merely the agreement of concepts, but does not itself produce concepts.
Arthur Schopenhauer