四勿：“非礼勿视，非礼勿听，非礼勿言，非礼勿动。”四端：“恻隐之心，仁之端也；羞恶之心，义之端也；辞让之心，礼之端也；是非之心，智之端也。”颜渊的“四勿”，要牢记心里；下工夫闲静存诚，克服外部的干扰以修养心性；孟子的“四端”，要尽力扩充，下工夫格物致知，由近及远，推己及人。

The best way to overcome fear is to face it.

"La verdadera libertad está en la mente y en el corazón."

The night is a great symphony, but the stars are its notes.

The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.

人类是一个太阳，感官是他的行星。