Warren, John Collins (1778-1856), was an American surgeon. He is chiefly remembered for taking part, with dentist William Morton, in the first public demonstration of ether as a surgical anesthetic in 1846. He made the famous remark, “Gentlemen, this is no humbug,” as he finished the operation. Warren was born in Boston, and was educated at Harvard College. Between 1815 and 1821, he helped found the Massachusetts General Hospital.
