I had a prof in college who once asked what the fundamental difference was between a man and a dog? He told this story so we could figure it out:
Back in the days of kings and queens and medieval kingdoms the titled and rich used to hold lavish banquets at their castles involving the other swells to gorge themselves on food and drink for days at a time. And European manners being rather primitive, they would bring their dogs with them who would hang out under the massive table hoping for scraps and bones. Now some of these dogs were a bit faster and quicker than others and some learned quickly which noble threw the meatiest bone and learned to hang out at their feet. And some dogs ate very well at the expense of others who did not eat very well.
But at the end of the night, not one of those dogs - even the most well ged and quickest among them - believed for a second that they were one of the nobles and jumped up on the table to take a seat.
And that in a nutshell is the difference between men and dogs. Some men do not have the good sense that nature or God gave animals.