when called to office,undertake one’s duties,when not called,lie retired ? 子謂顏淵曰： “用之則行，舍之則藏，唯我與爾有是夫?！?(《論語(yǔ)·述而》) The Master said to Yan Yuan，“When called to office,undertake your duties; when not so called,lie retired；—it is only I and you who have attained to this.”