You want to be the pebble in the pond that creates the ripple for change.

翻译：懂得满足的人不会被利益束缚，注重内心修养的人，即便没有显赫地位也内心坦荡。

当混凝土捕捉到光线时，它可以像木头一样温暖。

I think it's very important to have a feedback loop， where you're constantly thinking about what you've done and how you could be doing it better.I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.