Friends can come and go, but banners hang forever.
朋友可以来来去去，但精神却永远常驻。
The challenge is not just to collect data, but to make sense of it in ways that improve lives.
Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.