I do not believe in a fate that falls on men however they act; but I do believe in a fate that falls on them unless they act.Buddha
The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.Albert Einstein
The 'free-floating intellectual' may occupy himself with problems because of their inherent interest and importance, perhaps to little effect.Noam Chomsky
With his deeds, not only words, President Obama has revitalized our struggling space program.Buzz Aldrin
I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.Leonardo da Vinci
Asteroids have us in our sight. The dinosaurs didn't have a space program, so they're not here to talk about this problem. We are, and we have the power to do something about it. I don't want to be the embarrassment of the galaxy, to have had the power to deflect an asteroid, and then not, and end up going extinct.Neil deGrasse Tyson