The influence of John Stuart Mill was not so much in the direction of definite changes in society as in the direction of {238} an alteration of mental processes by which such changes became possible. Liberal thinkers like Paine and Bentham had assailed the human mind from without, clamouring about its gates with completely fashioned ideas, which they endeavoured to thrust into it by a sort of intellectual assault. They had no doubts of their own rightness or of the duty of others to agree with them. Mill, chiefly through his acquaintance with the evolutionary ideas of Comte, was of a more tolerant disposition, and preferred to adopt the method of getting to understand how his adversary's error had arisen, and of persuading him, as it were, to retrace his steps, and by choosing another road, arrive at a sounder conclusion. His book on Logic was an attempt to alter the prevailing system of intuitional philosophy, by which he believed that prejudices and the dictates of interest were assumed to be absolute truths, and to substitute for it a system in which every idea might be thoroughly examined and tested before it was adopted. In other words, he proposed to do with the conceptions of philosophy what Bentham proposed to do with institutions, to accept none, except on their merits. He thus hoped to produce, not definitely new ideas, but a condition of mind to which new ideas would not be repugnant. This method of undermining his adversary's position was his method in politics as in general philosophy. Mill was the son of a Utilitarian, and was himself a disciple of Bentham. But he never accepted the Benthamite theory without qualification. He knew that men were actuated by other motives, good and bad, than self-interest. He did not believe that by setting all men free to pursue their own interest the majority would achieve happiness. He did not believe that it was enough in politics to enfranchise every person of twenty-one years of age, or that a democracy might not be guilty of as abominable tyranny as a despot or an oligarchy. He held most of the Benthamite principles, as forming the best working philosophy, but he never supposed that they would not require safeguards against abuse, or would inevitably produce the desired result. Bentham said, "This individual is actuated by this {239} motive; apply this remedy to his condition, and he will develop himself to this point." Mill said, "This individual seems to be actuated by various motives, of which this seems to be the most important, his history and the experience of other individuals suggests that if this remedy is applied to his condition he will tend to develop himself to this point. I will therefore make the experiment." Bentham was always confident and dogmatic. Mill was never more than patient and hopeful.