Pope Benedict said Monday that gay marriage was one of several threats to the traditional family that undermined "the future of humanity itself."

The pope made some of his strongest comments against gay marriage in a new year address to the diplomatic corps accredited to the Vatican in which he touched on some economic and social issues facing the world today.

He told diplomats from nearly 180 countries that the education of children needed proper "settings" and that "pride of place goes to the family, based on the marriage of a man and a woman."

"This is not a simple social convention, but rather the fundamental cell of every society. Consequently, policies which undermine the family threaten human dignity and the future of humanity itself," he said.

The Vatican and Catholic officials around the world have protested against moves to legalize gay marriage in Europe and other developed parts of the world.

The Roman Catholic Church, which has some 1.3 billion members worldwide, teaches that while homosexual tendencies are not sinful, homosexual acts are, and that children should grow up in a traditional family with a mother and a father.

"The family unit is fundamental for the educational process and for the development both of individuals and states; hence there is a need for policies which promote the family and aid social cohesion and dialogue," Benedict told the diplomats.

Reuters