Hashkafa essentially is the understanding of the hashgacha of creation itself, what we understand about G-d, the purpose of the creation, its composition, and the purpose of man. Understanding the concepts of G-d's essence and existence is to see that G-d is existence itself. It is ultimately beyond our comprehension, but we must realize that it is out of our reach. Man must come to an understanding that there are things that exist in this world that are beyond our comprehension, and just because we don't understand doesn't mean that they don't exist.