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 GoetheAs all Nature's thousands changes But one changeless God proclaim; So in Art's wide kingdom ranges One sole meaning still the same: This is Truth, eternal Reason, Which from Beauty takes its dress, And serene through time and season Stands aye in loveliness.
Johann Wolfgang von Goethe