Bentham, who was perhaps, in the field of jurisprudence, the most destructive critic that ever appeared, had the merit which in his day was somewhat novel among reformers, and marked him out as something very different from Continental radicals--of being also highly constructive. Indeed, his labors in providing substitutes for what he sought to overthrow are among the most curious, and, we might add, valuable monuments of human industry and ingenuity. His proposed reforms were based, too, on a theory of human nature which differed from that in use among a large number of radicals in our day in being perfectly sound, that is, in perfect accordance with observed facts, as far as it went. But it did not go nearly far enough. It did not embrace the whole of human nature, or even the greater part of it, and for the simple reason, which Mr. Mill himself has pointed out in his analysis of Bentham's character, that its author was almost entirely wanting in sympathy and imagination. A very large proportion of the springs of human action were unknown or incomprehensible to him. The result was that, although he exerted a powerful influence on English law reform by his exposure of specific abuses, he made little impression on English sociology, properly so called. This was in part due to his narrowness of view, and in part to the absence of an interpreter, none of his followers having attempted to put his wisdom into readable shape, except Dumont, and he only partially and in French. The application of his method to the work of general reform was indeed left to Mr. Mill, who brought to the task an amount of culture to which Bentham could make no claim, and a large share of the sympathy of which there was also so little in Bentham's composition, and a style which, for expository and didactic purposes, has perhaps never been surpassed. Moreover, Mr. Mill lost no time, as most men do, in maturing. He was a full-blown philosopher at twenty-five, and discourses in his earliest essays with almost the same measure, circumspection, and gravity exhibited in the latest of his works, and with all the Benthamite precision and attention to limitations.