Gemini, Libra and Aquarius are the three zodiac signs built from air. Stand out in the breeze. Not even fire or rushing water can move as fast as air. And when it blows across your skin you feel sensations. So all the air signs are, in various ways, connected to quickness and tactile sensation.
Air can create vagabonds who just blow about in the wind from one place to another with no root, and no “feet on the ground.” This air makes guys who just fly from place to place not caring about anything except a quick and superficial sensation before they blow away to some other unimportant destination. On the other end of the spectrum air creates pure genius: the ability to quickly come up with a way “out there” idea and make it a tangible reality. Air is quick, and the air signs make us quicker and lighter. So on one side air can make us lose stability in life as a result of only caring about superficial sensations, but on the other side air gives us the ability to quickly change direction and leap to new levels of perception.