"My Opus, as anyone’s Opus would be, was divided into three distinct stages," Harry began. "The Nigredo, or Black Stage ... the Albedo, White Stage ... leading to this, my Rubedo, or Red Stage. The passing of each stage of my journey was marked by the death of the significantly appropriate kings who ruled that stage ... Sirius was my obvious Black King, through his surname, and Dumbledore my White King, as Albus means white."