While hatred against a member of the enemy race is justifiable, especially during wartime, what makes a human being rise above narrow prejudices?

It is very easy to hate your enemy but even more difficult to accept and love the enemy. When the humanity and human consideration comes on a stake. It becomes necessary to break the chains and stand aside from the crowd. In this story when the doctor sees the wounded enemy he becomes unable to resist himself to help the man which is the best example to explain the situation that makes a human being rise above the narrow prejudices.