关键是不断进步，不断奋斗，不断相信。

宇宙学家经常犯错，但从不怀疑。

【释义】过度保护抑制型儿童，等于剥夺他们学习应对恐惧的机会。

The most important thing is to focus on the user and all else will follow.

A good system design is one that makes it easy to do the right thing and hard to do the wrong thing.

I don't know. Sometimes when I feel about to cry, it often evolves into an impulse to almost laugh. That must have been how I really felt at the time, because I laughed, almost giggled.

To mount the scaffolds,To advance to the muzzle of guns with perfect nonchalance.