“In 5,000 years of recorded human history… neither in the east or in the west… has any society ever defined marriage as anything other than between men and women. Not one in 5000 years of recorded human history. That's an astounding fact and it isn't until the last 12 years or so that we have seen for the first time in recorded human history marriage defined as anything other than between men and between women.”

State of the Art (2000)

What Every Person Should Know About War

Actually from 1969 leaflet by The Feminists, "Women: Do You Know the Facts About Marriage?". Its text was reprinted in the anthology Sisterhood is Powerful edited by Robin Morgan.
Misattributed

Source: The Light of Other Days (2000), Chapter 19

57 min 0 sec
Cosmos: A Personal Voyage (1990 Update), The Shores of the Cosmic Ocean [Episode 1]

Remember that first year of marriage, when you went to the bathroom? Oh, lock the bathroom door, turn on the shower, because God forbid they knew you were going poo. Twenty years later, that bathroom door is wide open...you're saying "Bring the camera!"
Remember that first year of marriage, you'd come home and go "Ugh, what a bad day at work" and your wife would go, "Oh, they shouldn't be treating you so bad. Here, go sit down, I'll get you a beer, you can tell me all about it." Twenty years later, you come home, "Ugh, I had a bad day at work," she's going, "YOU WANT TO KNOW WHAT HAPPENED AT THIS HOUSE TODAY?! While you were at your 'job'?"
Here's Your Sign Live! (2004)

Source: Consciencism (1964), Introduction, p. 2.

Cosmic Trigger II : Down to Earth
Source: Cosmic Trigger 2: Down to Earth

Speech at Stanford University 2 March 2011 http://ecorner.stanford.edu/authorMaterialInfo.html?mid=2669