The dinosaurs disappeared because they could not adapt to their changing environment. We shall disappear if we cannot adapt to an environment that now contains spaceships, computers and thermonuclear weapons.
Keep on the lookout for novel ideas that others have used successfully. Your idea has to be original only in its adaption to the problem you're working on.
While animals survive by adjusting themselves to their background, man survives by adjusting his background to himself.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.