To estimate a genius you should not take the mistakes in his productions, or his weaker works, but only those works in which he excels. For even in the realm of the intellect, weakness and absurdity cleave so firmly to human nature that even the most brilliant mind is not always entirely free of them: whence the mighty errors which can be pointed to even in the works of the greatest men,
—Arthur Schopenhauer, Essays and Aphorisms (Classics)