If a man writes a book, let him set down only what he knows. I have guesses enough of my own.
Johann Wolfgang von Goetheif only these treasures were not so fragile as they are precious and beautiful.
Johann Wolfgang von GoetheThere is no permanence in doubt; it incites the mind to closer inquiry and experiment, from which, if rightly managed, certainty proceeds, and in this alone can man find thorough satisfaction.
Johann Wolfgang von Goethe