OgyÅ `` Sorai ( March 21 , 1666 , Edo , Japan -- February 28 , 1728 , Edo ) was a Japanese philosopher who used the pen name Butsu Sorai in many of his writings . OgyÅ `` Sorai ( March 21 , 1666 , Edo , Japan -- February 28 , 1728 , Edo ) , pen name Butsu Sorai , was a Japanese Confucian philosopher .