Suddenly, we humans - a recently arrived species, no longer subject to the checks and balances inherent in nature - have grown in population, technology and intelligence to a position of terrible power.
Paul MacCreadyWe humans are basically content with a two-dimensional world, which is what we-ve always occupied. We travel mostly on the ground, have traffic jams, parking problems , and we-d do a lot better to look up a little bit because there is that great aerial highway that-s always ready to go, you Don't have to pave it and the benefits are very great.
Paul MacCready