Abstract John Deweys reconstructed experience is composed of two phases: primary experience and reflective experience, and in the latter he discovered the act of selection. The discovery of the act of selection shows subjects conscious activities and tendency of rational reflection. Deweys analysis of the act of selection deconstructed the quest for certainty in traditional philosophy. The selection and contingency are not matters to be eliminated, but the necessary prerequisite for life and experiences growth as well as its production of meanings and values. According to Dewey, the act of selection leads to lifes diversity, and moreover, the selection in ordinary experiences essentially is a presentation of individuals freedom to the society, and that of human being to the nature.