This vast universe itself introduces its Creator. This introduction in no case admits of the concept of polytheism. In the universe countless items or parts are found separately; but all these parts combine and become a harmonious whole. There is no contradiction or clash among them. This perfect harmony could not be possible unless the Creator and Lord of this universe were one and in control of its functioning. Look at the case of man and woman. Man and woman both are born as independent beings. But at the same time both are complementary to each other in the full sense of the word. This harmony is so perfect that each of them feels that he or she was created for the other. This is a most wonderful example of harmony in this world. This harmony is a clear proof that both the male and the female were created by one and the same God. Had there been more than one Being in action in the universe, this perfect harmony between two different and opposite entities would not have been possible.