User needs are both the starting point and the ultimate goal of product development.
用户需求是产品开发的出发点，也是落脚点。
Music is the best medicine for the soul.
艺术不是反映现实的镜子，而是塑造现实的锤子。
I never look back. I look forward.
The only thing more dangerous than ignorance is arrogance.
The joy of mathematics is in the journey, not just the destination.