In the future, search engines should be as useful as HAL in the movie 2001: A Space Odyssey-but hopefully they won't kill people.

We wouldn't survive if people didn't trust us.

When it’s too easy to get money, then you get a lot of noise mixed in with the real innovation and entrepreneurship. Tough times bring out the best parts of Silicon Valley.

In the future, search engines should be as useful as HAL in the movie 2001: A Space Odyssey-but hopefully they won't kill people.

But the vast majority of books ever written are not accessible to anyone except the most tenacious researchers at premier academic libraries. Books written after 1923 quickly disappear into a literary black hole.

We came up with the notion that not all web pages are created equal. People are – but not web pages.

People try new things all the time. By now, the people who succeed have to be very sophisticated.