Cassirer and Genius

The widely-held opinion that Einstein was a genius can be disputed on two grounds, neither of which impugns his intelligence, diminishes the magnitude of his accomplishments, or questions the qualifications of many people to offer such a judgement. First, the popular locution 'is a genius' transforms a specific talent into a general type of human being, so, 'Einstein's work in Physics was the product of genius', would be a more accurate expression of that opinion. But, second, and more substantively, is in the same application of Kantianism that motivates Cassirer's judgement that Newton's innovations were not the product of genius. Kant's System distinguishes between 'Ideas' and 'Concepts', and it is the latter that are the sources of the laws of Physics, whereas, 'genius' produces only the former. Hence, as he concludes, 'genius' is not applicable to Newton, or to Physics, in general, and, so, presumably, not to Einstein, either. Now, Kant's discussion of Genius appears as part of his study of Art, e. g. "Genius is the ability to exhibit Aesthetic ideas", on the basis of which Cassirer asserts that Art is the only activity to which it is attributible. Conspicuously absent in his presentation of that assertion is any consideration of Philosophy. Surely the exhibition of ideas is central to not only Kant's own work but to most Philosophy, so lacking any further discussion, the assertion remains questionable.