Mr. Speaker, my point is that gay relationships are inherently sterile and that is just simply a biological statement of fact, in the absence of some intervention of a third party or some technological intervention of some kind or another. They are qualitatively different if we take the view that the core issue, the core reason for marriage is the creation of children and societal perpetuation.
In the House of Commons on December 6th, 2006. See this statement in context.