Notes From The Underground by Part 2 Chapter 1 Page 16

I had no resource except reading, that is, there was nothing in my surroundings which I could respect and which attracted me. I was overwhelmed with depression, too; I had an hysterical craving for incongruity and for contrast, and so I took to vice. I have not said all this to justify myself.... But, no! I am lying. I did want to justify myself. I make that little observation for my own benefit, gentlemen. I don't want to lie.

I vowed to myself I would not.

And so, furtively, timidly, in solitude, at night, I indulged in filthy vice, with a feeling of shame which never deserted me, even at the most loathsome moments, and which at such moments nearly made me curse. Already even then I had my underground world in my soul. I was fearfully afraid of being seen, of being met, of being recognised. I visited various obscure haunts.