Here's the rules, as I've seen them on the Internet:

• Grab the nearest book.
• Open it to page 56.
• Find the fifth sentence.
• Post the text of the sentence in your journal along with these instructions.
• Don’t dig for your favorite book, the cool book, or the intellectual one: pick the CLOSEST.

And my result is,

"But this concept of nature is confirmed by experience and must inevitably be presupposed if there is to be possible experience, which is coherent knowledge of the objects of sense in accordance with universal laws."

Immanuel Kant, Grounding for the Metaphysics of Morals. I may have been writing a philosophy paper last night...