Mars is waiting. It spins now outside our human reach. We must realize that the work of growing up is not something we can cut when the budget gets tight. It is mission critical, for the intellectual life of the species, for the future of humans, not to stagnate, not to wither, but to stretch, and reach, and always to expand.
— Lydia Netzer (New York Times Op-Ed, August 27, 2012)