Because they found that they could.Okay, from the beginning:The bridge, the line beneath the sky, the path I followed to my death.  The water awaits, the ink summons me, cold feet stumbling through wet leaves. The pieces pursue, the fragments of me I have left behind, abandoned here in 
this place.  I could not bring them with me, so here they wait, wait for me to return and remember what I have forgotten.  They have haunted me for what feels like forever, pushing me towards something I doubt I will ever comprehend.  I find them here, in the oblivion of my ignorance where I know I am lost.
I trip over a root hidden in the mud, sprawling at the the very edge of what I foolishly consider my sanity.  The wave overtakes me, consumes me, is me.  I made them alive, the things I discovered birthed them and they devoured me.  The trees, their strength ties me to the source;  depth is the only reality I conceive.  I crawl to the precipice, fumble for an anchor, here at the end.  I am sucked into the void, that tear in existence which lays waste to whatever handhold I think I have gained.
There is nothing, but even that is 
something?
I fall back through the cosmos as the rain of delight, return life to clay that was extinguished by the fire, laying there under the sky.  
It was I who put the stars on the brink, scattered the silk on the glass of the 
here.  I found I could live in the reflection, in the bubble of the paradox.  It was there that I created my destruction; it was there I became them.  They let me decide and I chose, there on the cliff of the unknowable.  I heard the echoes of the thoughts I never conceived. 
Thank you, were the words I left as I fled back through the line that divides.  That was the land I left behind, the place that saw my arrogance in ruin.  The land where the lights were the stars, because the mirror told me they were.  And I believed it.