Substance and Air

What it is that drives all beasts and men to want?
a place marked by a sign,
and by shambling upon it, seeing his Substance and Air.
and What it is that drives all beasts and men to want more still?
a sign marked by that place's absence, t'is no longer there.
and in hearing from the sky,
sound of the shambles, and the noise of Air and Substance.