This quote suggests that even though the world can seem bleak and like it is “ending,” this sense of despair can actually be a positive motivating force for people to work to change the world and make it a better and brighter place. This idea of the world “ending” could be figurative, with people worrying about the state of the world or an event, or it could be literal, such as a natural disaster. In either case, the quote implies that a feeling of being desperate or critical can lead to positive changes.