Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.

Take one simple thing — almost anything — but take it extremely seriously， as if it was the only thing in the world， or maybe the entire world is in it — and by taking it seriously you’ll light up the sky.

You can't have the good without the bad. So I just take the bad with the good and move on.

A 1% drop in user experience becomes a 100% disaster at scale.

Rule of 3 in conversation. To get to the real reason， ask a person to go deeper than what they just said. Then again， and once more. The third time’s answer is close to the truth.