In mathematics, the journey of discovery is often more rewarding than the destination itself.
I don't count my sit-ups. I only start counting when it starts hurting.
衡量一个人的真正标准是他如何对待那些对他毫无益处的人。
Life is too short to waste time on negativity.
If you're walking down the right path and you're willing to keep walking, eventually you'll make progress.