What Makes Us Human?

What makes us human? Philosophers have been asking this question for thousands of years. Written and spoken language, tool making and other capabilities have been offered as answers to this question, what makes us human? Recently evolutionary biologists have found a gene which seems to have evolved about 6,000 years ago, again we are back to the Fertile Cresent area. This gene seems to be responsible for our large brains and its growth. We all know that as a percentage of body mass humans have a large brain to body ratio. So all of this leads me back to what I have been saying for a long time, lets focus on what makes us the same, what makes us human, not on what makes us different. So what makes us human?