"Patience, young grasshopper" comes from a 1970s TV show called "Kung Fu". David Carradine played the role of Kwai Chang Caine, a half-American half chinese character in the old west who had been trained as a Shaolin monk in China. read more
As far as I know, it originated with "Kung Fu," an American television series from the early 1970s. The show often featured flashbacks, when the main character remembered his training as a boy in a monastery in China. read more