It is a powerful force that comes from mutual esteem, respect, and devotion. It isn't friendship when someone does something nice for you. He or she is simply being a nice person. There's no real friendship when only one side is working at it. Both must give for there to be friendship.
Friendship takes time and understanding.
Rarely will you find in working toward a common goal that others will be able to resist friendship if you offer it sincerely and openly. However, you may have to prime the pump first. Be brave enough to offer friendship. Toward the end of the Civil War, reparations were being discussed in the White House. He understood the tremendous force of friendship.