The beauty of mathematics lies in its ability to reveal hidden symmetries and truths.
文件就像定期保險(xiǎn):它令人滿意,因?yàn)閹缀鯖](méi)有人訂閱它取決于它的利益。
The only thing you sometimes have control over is perspective. You don't have control over your situation. But you have a choice about how you view it.