From time immemorial wars and social unrest have been fed by the...
I think this sentence above should be your first sentence. All the stuff before it surely comes from the heart, but it's what some call "pontificating," or "waxing philosophical." And this part does not seem quite right: "...glue to selfless service and understanding."
If you want to write this part with these words, you need to use a dash or a comma instead of a period:
My fondest experiences have been with friends from abroad, with differing languages and religio
ns -- beginning with my friend from Bangladesh, who could speak several languages, was a Muslim, and meshed seamlessly into society.
If you don't do that, the sentence that starts with "Beginning" is an incomplete sentence. I suggest this way:
My fondest experiences have been with friends from abroad, with differing languages and religions.
Beginning with My friend from Bangladesh could speak several languages, was a Muslim, and meshed seamlessly into society.
This material is all very good and thoughtful. I think you can improve this last sentence, though, so that it does not have this confusing part:
"and I find that I will follow..."
:-)