Close the door. Write with no one looking over your shoulder. Don't try to figure out what other people want to hear from you; figure out what you have to say. It's the one and only thing you have to offer.

We want to build a Google that works for everyone.

The most considerable difference I can see between men and animals is not in reason, but in the extent of the power of using it.  

The world is changed by your example, not by your opinion.

幸福不是没有痛苦，而是有能力克服它。