I think it's easier than ever to hear only what you want to hear. That doesn't make a good citizen.

It feels great to have your own views reflected back to you, and you feel so right, but actually it's very dangerous. Because to make good decisions, you need to have a clear view of what all the options are.

Facebook was looking at which links I clicked on, and it was noticing that I was clicking more on my liberal friends' links than on my conservative friends' links. And without consulting me about it, it had edited them out. They disappeared.

More voices means less trust in any given voice.

Whether it's Facebook or Google or the other companies, that basic principle that users should be able to see and control information about them that they themselves have revealed to the companies is not baked into how the companies work. But it's bigger than privacy. Privacy is about what you're willing to reveal about yourself.

By constantly moving the flashlight of your attention to the perimeter of your understanding, you enlarge your sense of the world.

To be a good citizen, it's important to be able to put yourself in other people's shoes and see the big picture. If everything you see is rooted in your own identity, that becomes difficult or impossible.