Disclaimer: I am just a visitor playing in Rowling's Universe. I own nothing.
I am writing this for two reasons: firstly, to show you that I am not the villain I have been portrayed as, but merely a human who has, step by step, choice by choice, built the bars of his own cage. I must write this for you, child, because I feel it is my duty to show you the grays of this world – to show you just how easily those lines between black and white, good and bad blur in your most desperate hours. I'm sure you would rather burn this than actually read it, but that is your choice to make.
Of course, I also write to find some semblance of peace, some way of accepting the man I've become and the choices I've made, before I die. I'm not sure whether I will find that peace, but I know that I've escaped Death too many times for Him to let me get away again. I owe a debt, and it will be paid with nothing less than my life.
And so, as my last days slip by, I write.