This quote is written / told by Chen Ning Yang somewhere between September 22, 1922 and today. He/she was a famous Physicist from USA.
The author also have 5 other quotes.
"We have our own history, our own language, our own culture. But our destiny is also tied up with the destinies of other people - history has made us all South Africans"
"Of course as children, we all, in all cultures and societies, learn behavior from observation, imitation, and encouragement of various kinds. So by the suggestion made, we all 'pretend' most of the time"
"Without culture, and the relative freedom it implies, society, even when perfect, is but a jungle. This is why any authentic creation is a gift to the future"