Air Conditioning and Refrigeration

So it is with air: there is the brightest variety which we call aether, the muddiest which we call mist and darkness, and other kinds for which we have no name...

When I was born I drew in the common air, and fell upon the earth, which is of like nature, and the first voice which I uttered was crying, as all others do.

O, thou art fairer than the evening air
Clad in the beauty of a thousand stars.