The past is a foreign country; they do things differently there.

I'm not perfect, but I'm striving every day to be better than I was yesterday.

The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.

The city is like a text, it speaks to those who can read it.

【译文】人活一辈子，就像花草树木繁荣，一春一秋，非常短暂。年少时不知道勤学苦读，弹指间就会变成白发老翁。月亮过了十五后光明就会越来越少，人到中年还一事无成，也就不会有大的作为了。