You know what it can all be boiled down to In my humble opinion.
Respect others and treat them as you would want treated

if we all did that, language, differences and everything else wouldn't matter.

It amazes me that when I traveled to other countries, a smile and a hand shake was pretty much universal. I ended up having coffee with my family and a guy's family that I met to ask directions in italy sitting on his porch. we could barely speak to each other. But the kindness and the friendship cut through all of it and it was a wonderful time. His wife made coffee brought out pastries and we sat and laughed barely able to communicate but he understood and so did I and our families. Wonderful people, kindness, and love have no single culture or language