When you wonder what you have in common with another person, you can always answer the question with "bodily life." This is a pretty huge starting point for discovering shared or parallel experience which crosses ethnic, religious, political, geographic, and cultural differences. By the gift of our bodies we are brought together. I am excited to realize how much I share with people all across the earth.
Oh, my goodness, YES! I'd add intellectual differences to the list; shared or parallel experience is the bridge to weaving knowledge and action across disciplines. Expanding our intimacy with and awareness of this beautiful world means expanding our context or circle of awareness.