How things can be between men on this Earth

I was reading this morning about the relationship between Jesse Owens, the African-American who famously ran to victory at the 1936 Olympics under the nose of Adolf Hitler and his Aryan ideals, and his rival, the German Luz Long. Whilst parts of their relationship is disputed, what struck me was this part of the story:

Luz Long died in 1943 while fighting for Germany in World War II. A final letter he wrote to Jesse Owens reads, in part, “Someday find my son … tell him about how things can be between men on this Earth.”

I don’t know why, but that stopped me dead in my tracks when I read it.