I think that's been really the key, the idea of trying to harness social capital for selling purposes. That we've let this happen so easily without clearly getting something in exchange is kind of amazing to me.

Advertising always corrupts the goal of the search engine, which is to try to give you the most important stuff, not the stuff someone paid there to be there.

Hitler understood the demagogues' essential principle to teach or persuade is far more difficult than to stir emotion.

I want to say, however, one thing our media in America has done which didn't happen in other totalitarian states is it has very effectively stood up to Donald Trump who has obvious fascist tendencies and his - who's a temptation like all authoritarian figures to try to crush the media or make it obey him. As that - the media has, in fact, stood up to him and has refused to bow out or cower.

If you have a disease and suddenly start getting ads for cures for that disease and it's an embarrassing disease - all that kind of stuff it just gets into that zone of autonomy or privacy where you feel a sense of freedom to be who you want to be.

There is this inherent human instinct that the usual way you control trolling is you force people to use their real identities. So there's less trolling on Facebook, for example.

One thing I'll say about Hitler that many people don't realize - and I don't mean to besmirch the industry - but he did get his start, not only as an artist, but as an advertising man writing art for advertisements.