"He does not appear to have had much taste for mere abstract mathematics; but his papers prove that he was familiar with those branches which were most useful to him in their application. His demonstration of the laws of aberration is to be taken rather as an historical curiosity, than a test of his geometrical abilities. Every one, who has investigated a new problem, must be aware that the first solution which he devises has seldom been the best. Bradley's sole object, in this case, was to ascertain the rules by which he was to calculate; he had no view to publication; if he had, he might have improved the form, and condensed the substance, of his demonstration. But in this instance, as in others, he was probably checked by a fear of submitting his thoughts to the opinion of the world."