There is a curious question that has risen out of this proposition of Berkeley, of the supposed illusion we suffer in our conceptions of the material universe. It has been said, "Well then, I am satisfied that the chairs, the tables, and the other material substances with which I conceive myself to be surrounded, are not what they appear to be, but are merely an eternal chain of antecedents and consequents, going on according to what Leibnitz calls a 'preestablished harmony,' and thus furnishing the ground of the speculations which mortals cherish, and the motives of their proceeding. But, if thus, in the ordinary process of human affairs, we believe in matter, when in reality there is no such thing as matter, how shall we pronounce of mind, and the things which happen to us in our seeming intercourse with our fellow-men, and in the complexities of love and hatred, of kindred and friendship, of benevolence and misanthropy, of robbery and murder, and of the wholesale massacre of thousands of human beings which are recorded in the page of history? We absolutely know nothing of the lives and actions of others but through the medium of material impulse. And, if you take away matter, the bodies of our fellow-men, does it not follow by irresistible consequence that all knowledge of their minds is taken away also? Am not I therefore (the person engaged in reading the present Essay) the only being in existence, an entire universe to myself?" Certainly this is a very different conclusion from any that Berkeley ever contemplated. In the very title of the Treatise in which his notions on this subject are unfolded, he professes his purpose to be to remove "the grounds of scepticism, atheism and irreligion." Berkeley was a sincere Christian, and a man of the most ingenuous dispositions. Pope, in the Epilogue to his Satires, does not hesitate to ascribe to him "every virtue under heaven." He was for twenty years a prelate of the Protestant church. And, though his personal sentiments were in the highest degree philanthropical and amiable, yet, in his most diffusive production, entitled The Minute Philosopher, he treats "those who are called Free Thinkers" with a scorn and disdain, scarcely to be reconciled with the spirit of Christian meekness. There are examples however, especially in the fields of controversy, where an adventurous speculatist has been known to lay down premises and principles, from which inferences might be fairly deduced, incompatible with the opinions entertained by him who delivered them. It may therefore be no unprofitable research to enquire how far the creed of the non-existence of matter is to be regarded as in truth and reality countenancing the inference which has just been recited.