There are many things worth living for, a few things worth dying for, and nothing worth killing for.
Wheeler hopes that we can discover, within the context of physics, a principle that will enable the universe to come into existence "of its own accord. " In his search for such a theory, he remarks: "No guiding principle would seem more powerful than the requirement that it should provide the universe with a way to come into being. " Wheeler likened this 'self-causing' universe to a self-excited circuit in electronics.