Introduction Atheistic existentialism assumes a row of varied conceptions which are mainly characterized by the central idea of atheism. This theory argues that God does not exist; but this is not the reason for bad conduct. As far as I am concerned, this theory is not valid in the explanation of a row of important issues existing in the Universe with regards to the Creator, and all the moral issues connected to it. I believe, this theory is just an effort to excuse people’s conduct and their unwillingness to recognize God as a Supreme Absolute of the Universe. The other feature of this theory which I find to be inconsistent is the encouragement to act morally even without recognition that people are accountable to someone; actually, not many people will succeed in finding so much self-control that might enable them to act righteously just out of their kind motives. The theory of atheistic existentialism can be evaluated as having a row of blind passes including bad motivation for people to reject their moral and spiritual principles, and to engage in the pursuit for materialistic values which seem to bring few real joy and happiness to them, and also to rob them out of real satisfaction in their lives. The main statements of the theory of atheistic existentialism Speaking about the theory of atheistic existentialism, I would, first of all, mention Jean-Paul Sartre as the main figure who developed this way of thinking and was among those who actively proclaimed this theory into the masses. To understand this theory it is important to address the works of this philosopher where he establishes a variety of generic ideas of atheistic existentialism. First of all, in his works Sartre argues that human “existence precedes essence” (311). In addition, he develops the concepts of “Being-for-itself (human consciousness) and being-in-itself” (Anderson 3). Further, Sartre describes consciousness as “consubstantial and content less, that is, as entirely activity and spontaneity, self-determining, self-activated and, therefore, free” (Anderson 7). Next, Sartre states that “being-in-itself, on the other hand, is passive and inert, so identical with itself and filled with being that it is a totally undifferentiated, full positivity of being” (Anderson 9). Sartre claims that “consciousness is related to being inasmuch as it exists only as consciousness of being” (Anderson 9). He adds that “being in itself has no relation with consciousness nor, strictly speaking, even with itself. It simply “is itself‟ and “glued to itself‟ as a full positivity of being” (Anderson 10). What is more, according to him atheism is the source of motivation for having no objective values. This suggests that he simply robs people out of some values and principles of theirs, and offers nothing instead as atheism is an empty pursuit having nothing inside and outside itself. Sartre’s role According to the theory of atheistic existentialism developed by Sartre, There is no God to create or decree anything to be of value. The [atheistic] existentialist…thinks it very distressing that God does not exist, because all possibility of finding values in a heaven of ideas disappears along with H