Desc: The Nature of Existence: Directed by Roger Nygard. With Nancy Ellen Abrams, Rob Adonis, Aha, Javed Akhtar. Filmmaker Roger Nygard roams the globe to the source of each of the world's philosophies, religions, and belief systems. He interviews spiritual leaders, scholars, scientists, artists, pizza chefs, and others who have influenced, inspired, or freaked out humanity.