We respect that Budda was born in Northern India (present day Nepal), then from there, Buddhism spread to the world. The Japanese school of Zen Buddhism is heavily influenced by Indian and Chinese practices incorporated on route.
The concept of Zen has evolved and spread to the Western society and some of the basic philosophy has been lost in the process.
Zen seems to also get confused with Taoism where I see many websites listing "Zen proverbs" which includes quotes from Confucius (Taoist).