The birth of Moore's philosophy has a background in Bradley's Idealism-The philosophy of Bradley is rooted in Hegelianistic philosophy- and in Berkeley's immaterialism. Moore tried to revive English Realism tradition. Long before Bradley thoughts. The matterials of this research are all drawn from English philosophy that deals with Common Sense, both influencing and influenced by Moore's philsophy. The objective of this research is describe the function of Common Sense in Moore's philosophy. The aims of this research are (1) to determine the meaning of Common Sense, (2) to determine the realization of epistemology of Common Sense, and (3) to identify the contribution of epistemological Common Sense in the development of philosophy of scien...