The Fifth Head of Cerberus

I re-read the Fifth Head of Cerberus.  That is the only way to read it, and in truth, the only way to read a lot of what Gene Wolfe has given us.  The first reading gives you the overall shape, but leaves a lot of strangeness. As you re-read, the strangeness becomes familiar and eventually the myriad of hints and allusions begin to take on an overall shape.  The laws of perspective appropriate to this reality become clear.