The elegance of a mathematical proof is in its simplicity and clarity.
人的感情容易变化反复,人生之路常会崎岖不平。
“拙”可以使人少过错,“缓”可使人免后悔,“退”可远离灾祸,“苟”可使人养福,“静”可使人长寿。
个体本身就是一个谬误。