I apologize in advance for veering wildly off topic, but I was trying to find the author of the quotation in your signature and couldn't find it. Do you know the source? While googling I found an image that I found compelling and thought you'd like ... I'm not a Marine, but 'Semper Fi', young man.
The first quote I can attibute to the girlfriend of a roommate.
The second quote I am not sure. I saw it somewhere a while back and thought it said quite a lot.