Dr. Samuel Clarke, rector of St. James's, Westminster, the especial friend of Sir Isaac Newton, the distinguished editor of the poems of Homer, and author of the Demonstration of the Being and Attributes of God, was one day summoned from his study, to receive two visitors in the parlour. When he came downstairs, and entered the room, he saw a foreigner, who by his air seemed to be a person of distinction, a professor perhaps of some university on the continent; and an alderman of London, a relation of the doctor, who had come to introduce the foreigner. The alderman, a man of uncultivated mind and manners, and whom the doctor had been accustomed to see in sordid attire, surrounded with the incumbrances of his trade, was decked out for the occasion in a full-dress suit, with a wig of majestic and voluminous structure. Clarke was, as it appears, so much struck with the whimsical nature of this unexpected metamorphosis, and the extraordinary solemnity of his kinsman's demeanour, as to have felt impelled, almost immediately upon entering the room, to snatch the wig from the alderman's head, and throw it against the ceiling: after which this eminent person immediately escaped, and retired to his own apartment. I was informed from the same authority, that Clarke, after exhausting his intellectual faculties by long and intense study, would not unfrequently quit his seat, leap upon the table, and place himself cross-legged like a tailor, being prompted, by these antagonist sallies, to relieve himself from the effect of the too severe strain he had previously put upon his intellectual powers. But the deviousness and aberration of our human faculties frequently amount to something considerably more serious than this. I will put a case. I will suppose myself and another human being together, in some spot secure from the intrusion of spectators. A musket is conveniently at hand. It is already loaded. I say to my companion, "I will place myself before you; I will stand motionless: take up that musket, and shoot me through the heart." I want to know what passes in the mind of the man to whom these words are addressed. I say, that one of the thoughts that will occur to many of the persons who should be so invited, will be, "Shall I take him at his word?" There are two things that restrain us from acts of violence and crime. The first is, the laws of morality. The second is, the construction that will be put upon our actions by our fellow-creatures, and the treatment we shall receive from them.--I put out of the question here any particular value I may entertain for my challenger, or any degree of friendship and attachment I may feel for him.