" We are spending a million million dollars every year, worldwide, on armaments. A million million dollars. Think of what you could do with a million million dollars. A visitor from somewhere else - the legendary intelligent extraterrestrial - dipping down to the Earth and inquiring what we are about and finding such prodigies of human inventiveness and such enormous fractions of our wealth devoted not just to the means of war but to the means of massive global destruction - such a being would surely deduce that our prospects are not very good and perhaps go on to some other, more promising world. "

― Carl Sagan , The Varieties of Scientific Experience: A Personal View of the Search for God