Lord Buddha delivered his deepest oration on the total annihilation of the world. To understand, he uses the analogy that the world we see is like a picture - no matter where we look, there are images. We cannot escape this picture from birth to death. However, there is a way to escape called "Loka Nirodhaya" or the total disappearance of the world. This is achieved by meditating and annihilating the mental pictures that cover a place we cannot see with our eyes or thoughts. Seeing this new place uncovered is called Nibbana.