From Text 12 of Fernando Pessoa's (very quotable) The Book of Disquiet:

I envy--but I'm not sure that I envy--those for whom a biography could be written, or who could write their own. In these random impressions, and with no desire to be other than random, I indifferently narrate my factless autobiography, my lifeless history. These are my Confessions, and if in them I say nothing, it's because I have nothing to say.