"Man must rise above the Earth—to the top of the atmosphere and beyond—for only thus will he fully understand the world in which he lives."— Socrates

"The air up there in the clouds is very pure and fine, bracing and delicious. And why shouldn't it be? —it is the same the angels breathe."— Mark Twain, ‘Roughing It,’ Chapter XXII, 1886

"Gliders, sailplanes, they are wonderful flying machines. It's the closest you can come to being a bird."— Neil Armstrong