What do you think about the description of my book?

I believe you are giving way too much away. What kinds of readers are you aiming for? If this description is to be used for marketing purposes and enticing readers--you seem to be putting the entire beginning / middle / end of the book on a silver platter. Of course it's good to be honest and straightforward but is there going to be nothing but philosophical dialogue in the book? Your audience for that will be very tiny! But if there is at least some plot hook going on--something queer or mysterious or compelling that can give more energy and drama to the plot, then you can deliver all the philosophy you want to an attentive audience.

PLEASE TAKE A LOOK AT THIS EDITED VERSION....which reflects what I'm talking about in the above paragraph with leaner, more streamlined language that is easier to absorb:

Having searched for enlightenment down so many paths, a long-haul trucker named Matt concludes that the relative contentment he enjoys is as good as it gets. But feeling lonely one day, he allows a strange, would-be monk ride with him, and his buried longing for spiritual enlightenment is re-ignited.

The stranger’s uniquely practical approach to life and attitude towards the world captures Matt’s full attention. And by becoming aware of his commonplace, reactionary thinking, Matt unexpectedly finds himself ready to commit himself to the man’s teachings. A talking poodle with a French accent at a truck stop in Abilene has a lesson to teach as well!

OK, I'M KIDDING ABOUT THE POODLE....but you get what I'm trying to say? If you really want to expand your audience, you need to have a more interesting and active plot. You can still deliver your core philosophical message--but it might be to a much wider audience. Good luck!!

Very indistinct. I'd like to understand extra main points. Is his huge mystery that he is a superhero? Is he a robotic? Is he 30 years historical, parading as an adolescent? Is he a girl? Is he a convicted and escaped assassin? Even while she does work out good day, why does she stick with him if he is not fair to her? Why does not she provide him an ultimatum of "inform me or I'll go away you"? She has the energy to go away this dating; is she so vulnerable that she are not able to live on with out him? I hate vulnerable characters.

it sounds good! very descriptive and your grammar is a lot better than mine too! XD

Yeah, I like it I think I would read it!