The loss of a much-prized treasure is only half felt when we have not regarded its tenure as secure.
Johann Wolfgang von GoetheIf you start to think of your physical and moral condition, you usually find that you are sick.
Johann Wolfgang von GoetheMan knows himself only insofar as he knows the world, becoming aware of it if only within himself, and of himself self only within it. Each new subject, well observed, opens up within us a new organ of thought.
Johann Wolfgang von Goethe