Insofar 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 GoetheMost man only care for science so far as they get a living by it, and that they worship even error when it affords them a subsistence.
Johann Wolfgang von GoetheThe art of governing is a great metier, requiring the whole man, and it is therefore not well for a ruler to have too strong tendencies for other affairs.
Johann Wolfgang von Goethe