Students deserve great teachers. And teachers deserve the support they need to become great.

There are websites that any government wants to block. The truth about the Internet is that it's extremely hard to block anything - extremely hard. You'll never get perfect blocking.

Often you have to rely on intuition.

Software is more important than hardware.

A lot of people assume that creating software is purely a solitary activity where you sit in an office with the door closed all day and write lots of code.

It was really phenomenal [Warren Buffett donation]. It grew out of the friendship that we had and the fact that his plan to have his wife run the foundation and give things away changed when she tragically died.

Imagine the disincentive to software development if after months of work another company could come along and copy your work and market it under its own name...without legal restraints to such copying, companies like Apple could not afford to advance the state of the art.