Claude Grahame-White,
Learning to Fly: A Practical Manual for Beginners
“ But the aeroplane—weighing with pilot, passenger, and fuel perhaps several thousand pounds—rises without the aid of a gas-bag and with nothing to sustain it but narrow planes; and these do not beat, like the wings of a bird, but are fixed rigidly on either side of its body. How is the weight of machine and man borne through this element we cannot see, and which appears intangible?The secret is speed—the sheer pace at which an aeroplane passes through the air. As a craft stands on the ground, its planes are inoperative. ”
