All that we imagine to be factual is already theory-Goethe Maxims and Reflections
Man only plays when he is, in the full sense of the word a man, and he is only wholly Man when he is at play-Schiller On the Aesthetic Education of Man, Letter XV
Of freedom and of life he only is deserving who every day is able to conquer them anew-Goethe Faust, Part II, Act V