A carving illuminates structure of a material.  The resulting void and solid are physical  evidences of plays among the material’s resistance, its
tendencies, and the carver’s understanding of the material.

From <The Parachute Jump> by Georges Perec
This is the moment when it all gets very complicated; 
Well, I couldn’t manage to stand up.....  That’s the moment when doubt
appears.  It was exactly as if everything had been thrown back into
question. 

That’s the moment when the problem of choice poses itself.  Exactly the problem of life as a whole.  That was the moment when I knew I was going to have to put my trust in things that were wholly alien to me.  That I was going to have to begin assuming my situation fully, definitively.