“The average dog is a nicer person than the average person.”

Doin' It Again, Parental Advisory: Explicit Lyrics (1990)
Context: I know that. Some people don't want you to mention certain things. Some people don't want you to say this, some people don't want you to say that. Some people think if you mention some things they might happen. Some people are really fucking stupid. Did you ever notice that, how many stupid people you run into during the day? Goddamn there's a lot of stupid bastards walking around. Carry a pad and pencil with you, you'll wind up with thirty or forty names by the end of the day. Think about this; think about how stupid the average person is, and then realize that half of 'em are stupider than that.

IQ84 (2009-2010)
Variant: I'm a very ordinary human being; I just happen to like reading books.
Source: 1Q84 BOOK 1

Two in the Bush (1966)
Context: The attitude of the average person to the world they live in is completely selfish. When I take people round to see my animals, one of the first questions they ask (unless the animal is cute and appealing) is, "what use is it?" by which they mean, "what use is it to them?" To this one can reply "What use is the Acropolis?" Does a creature have to be of direct material use to mankind in order to exist? By and large, by asking the question "what use is it?" you are asking the animal to justify its existence without having justified your own.

Source: How to Win Friends and Influence People (1936), p. 73 (in 1998 edition)

Wisecracks

1990s, Schafer interview (1995)
Context: America is the most inventive country in the world. Why? Because everybody has access to information. In the Soviet Union it was illegal to take a photograph of a train station. Look what happened to them. They tried to classify everything. The more information available to the average person, the greater the synergy that develops from it.

Twitter post https://twitter.com/normative/statuses/86027152612540416 (29 June 2011) as quoted in Mike Masnick, " When You're About To Fly, Who Do You Fear More: Al Qaeda... Or The TSA? http://www.techdirt.com/articles/20110629/04255014908/when-youre-about-to-fly-who-do-you-fear-more-al-qaeda-tsa.shtml, Techdirt (2011).