Innovation is not about saying yes to everything. It’s about saying no to all but the most crucial features.

你不能在空荡荡的肚子和人类的苦难上建立一个和平的世界。

You are not only responsible for what you say, but also for what you do not say.

实现明天的唯一限制将是我们今天的怀疑。

The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.