Pope Benedict XVI to the Curia, Thursday December 12, 2012:

"The profound falsehood of this (gender identity) theory and of the anthropological revolution contained within it is obvious. People dispute the idea that they have a nature, given by their bodily identity, which serves as a defining element of the human being. They deny their nature and decide that it is not something previously given to them, but that they make it for themselves. According to the biblical creation account, being created by God as male and female pertains to the essence of the human creature. This duality is an essential aspect of what being human is all about, as ordained by God."