We often feel that we lack something, and seem to see that very quality in someone else, promptly attributing all our own qualities to him too, and a kind of ideal contentment as well. And so the happy mortal is a model of complete perfection--which we have ourselves created.
Johann Wolfgang von GoetheHappiness is a ball after which we run wherever it rolls, and we push it with our feet when it stops.
Johann Wolfgang von GoetheInsofar as he makes use of his healthy senses, man himself is the best and most exact scientific instrument possible. The greatest misfortune of modern physics is that its experiments have been set apart from man, as it were, physics refuses to recognize nature in anything not shown by artificial instruments, and even uses this as a measure of its accomplishments.
Johann Wolfgang von Goethe