Quantum Cosmology, M-theory and the Anthropic Principle
hawking.org.uk
hawking.org.uk
http://arxiv.org/abs/hep-th/0407213
On a side note, his book "The Trouble with Physics" is a great (though very pop-physicsy) read on the history and philosophy of physics.
I'm not sure how arxiv.org work, but the paper is arXiv:1101.2444 just in case.