Add to ORKGTreating facticity (facticité) in itself (pour-soi), Sartre sinthetically and logically examines the problem of gratuitness. This article tries to describe Sartre\u27s claim that human being can not be founded neither by him/herself nor by any other being. He, therefore, says that God has to be contingent. Recognizing the human\u27s wish to be God, however, Sartre did not recognize that Christian God – the god of Holy Scripures is on a different level from human reality. For Sartre, Descartes can not escape from ideal world; Heidegger can not establish ethics on our contingency; Leibniz can not escape from the possible and reach the Being. Unfortunately, it is a pity that Sartre\u27s ideas here are so confused, so they can not be taken se...