Us versus Them

The similarities between people are far greater than the differences. Everyone I know gets hungry, thirsty, and sleepy. They also want to be materially comfortable. How many adults don't have sexual desire? How many people don't want to protect their children, friends and families?

In my opinion, the single greatest problem in the history of mankind has been, and continues to be, the concept of Us versus Them. As long as people blur the similarities between themselves by focusing on some minor differences, it becomes easy for one group to view another group as something other than almost identical human beings. Once a group of people is identified as Them, it becomes a simple matter to justify treating Them inhumanely in the interests of Us.