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"
"If the present Congress errs in too much talking, how can it be otherwise in a body to which the people send one hundred and fifty lawyers, whose trade it is to question everything, yield nothing, and talk by the hour?"