While air may seem ethereal, it is an all pervasive force, covering and permeating everything around us.$B$BThough you cannot see it, the rocks of this cave are composed mostly of air, the waters of the oceans are saturated in it and without it, fire cannot be sustained.  Just don't let those elements hear you repeat that!$B$BWho you really wish to speak with for such wisdom is nearby.  At the northern edge of the precipice, Susurrus awaits you.  It is from him that you will gain understanding.