"You know what the first rule of flying is? Love. You can learn all the math in the 'verse but you take a boat in the air that you don't love ... she'll shake you off just as sure as the turn of the worlds. Love keeps her in the air when she ought to fall down, tells you she's hurting before she keels. Makes her a home."
— Mal, Serenity
"She sees a groundcar drive past, and in her mind’s eye, she sees the engine driving it, the chemical combustion in the engine, the molecules combining and breaking, the waves of energy passing and coalescing."
