Don't let anyone tell you what you can't do. Prove them wrong.
The only person you should try to be better than is the person you were yesterday.
做数学的艺术在于找到包含所有普遍性萌芽的特殊情况。
【译文】 孔子说:“有益的爱好有三种,有害的爱好有三种。爱好礼乐、爱好称赞别人的优点,爱好广结善友,有益处;爱好放荡、爱好闲逛、爱好大吃大喝,有害处。”