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When a population of organisms grows in a finite environment, sooner or later it will encounter a resource limit. This phenomenon, described by ecolo… - Robert Zubrin
" "When a population of organisms grows in a finite environment, sooner or later it will encounter a resource limit. This phenomenon, described by ecologists as reaching the “carrying capacity” of the environment, applies to bacteria on a culture dish, to fruit flies in a jar of agar, and to buffalo on a prairie. It must also apply to man on this finite planet. JOHN P. HOLDREN and PAUL R. EHRLICH Global Ecology (1971) 1 Here is the difference between the animal and the man. Both the jay-hawk and the man eat chickens, but the more jay-hawks the fewer chickens, while the more men the more chickens. HENRY GEORGE
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Additional quotes by Robert Zubrin
Napoleon, like Musk, was a genuine genius who won repeatedly by defying expectations. Success bred a sense of invincibility. The march on Moscow followed, not from necessity, but from overconfidence, and it ended in catastrophe.
Brilliance does not preclude folly. Indeed, it often invites it. The Moon may yet prove to be Musk’s Moscow.
The moon is a world of rough terrain, with an extent the size of Africa. Such a world cannot be adequately explored on foot, or by ground vehicles. To get around the moon in any serious way, we are going to have to be able to fly. The moon, of course, has no air, so airplanes are out of the question. But by taking advantage of its polar ice to produce hydrogen/ oxygen propellant, we will be able to fly all over the moon using rocket-powered ballistic flight vehicles.
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