if you are aware of a state which you call "is"
or reality, or life
this implies another state called "isn't"
or illusion, or unreality, or nothingness, or death
there it is; you can't know one without the other
and so as to make life poignant
it's always got to come to an end
this is exactly, don't you see, what makes it lively
liveliness is change, is motion