They do not regard God as the creator of matter, as they consider matter to be eternal. Pratibha Patil, the UPA-Left candidate and former President of India said on camera during the 2007 Indian presidential election, that she spoke to "Baba" (a term the BKs use for God) at the Brahma Kumaris World Spiritual University at their headquarters in Mount Abu, Rajasthan. Patil stated that when she met Baba He had indicated great responsibility was coming her way. The Brahma Kumaris believe that every action performed by a soul will create a return accordingly, and that the destiny of the soul's next body depends on how it acts and behaves in this life. Through meditation, by transforming thinking patterns and eventually actions, the Brahma Kumaris believe that people can purify their "karmic account" and lead a better life in the present and next birth. In contrast to linear theories of human history that hypothesize an ancient point of origin for the universe and a final destruction, the BKs do not posit a start, end or age for the universe, believing such concepts to be an erroneous application of the human life cycle to the universe. BKs believe the universe to follow an eternal, naturally occurring 5,000 year cycle, composed of four ages ("yugas"): the Golden Age ("Sat Yuga"), the Silver Age ("Treta Yuga"), the Copper Age ("Dwapar Yuga"), the Iron Age ("Kali Yuga") and each represents 1250 years of the cycle. They also believe that at the end of the Iron Age there will be "Destruction." They believe Destruction will kill everyone on Earth and cleanse the Earth. Then only can the cycle repeat again. They believe Destruction will happen when U.S.A. goes to nuclear war to Russia. The present period of this cycle is sometimes described as a fifth age or "Confluence age" as it is considered to be the confluence (the junction or meeting) between the Iron Age and the Golden age. The first half of the cycle (the Golden and Silver ages) is considered to be the age of "soul conscious living". The Brahma Kumaris see this as a time of "heaven on earth" or as a version of the Garden of Eden when human beings are fully virtuous, complete, self-realised beings who lived in complete harmony with the natural environment. The primary enlightenment was the innate understanding of the self as a soul.