喜怒哀乐而曰未发，是从人心直溯道心，要他存养；未发而曰喜怒哀乐，是从道心指出人心，要他省察。
有喜怒哀乐之情却没有发作，这是从凡人之心直接追溯到道德之心，使人们存心修养；虽未发生但却有喜怒哀乐的表现，这是由道心指出人心的缺欠，要人们反省改正。
"The only real failure in life is not to be true to the best one knows."
"The only thing that is truly infinite is the human imagination."
The mind's primary task is to organize experience for action.