I have never listened to anyone who criticized my taste in space travel, sideshows or gorillas. When this occurs, I pack up my dinosaurs and leave the room. Ray Bradbury
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. Arthur C. Clarke
Dinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program. Neil deGrasse Tyson
And I'm sorry for us The dinosaurs roam the earth The sky turns green. Thom Yorke
The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right! Larry Niven
Observation: I can't see a thing. Conclusion: Dinosaurs. Carl Sagan