Yet hardly anyone but a transcendental philosopher would be capable of such admiration, and even he could identify no determinate case where Could Linnaeus possibly have hoped to outline a system of nature if he had had to worry whether, on finding a stone that he called granite, this might differ in its internal constitution from every other apparently identical one, so that all he could ever hope to encounter were individual things merely isolated, as it were, for the understanding, but never a class of things which could be brought under the concepts of genus and species? '