孔子说:“陪君子说话要注意三种毛病:没到说的时候就说,叫做急躁;到该说的时候不说,叫做隐瞒;不顾对方的表情就说,叫做睁眼瞎。”
质量不是一种行为,而是一种习惯。
数学研究是具体与抽象之间不断的对话。
The fully realized person is one who has discovered and is developing his or her own potentialities.