Ten Things You Should Know About Pope Benedict XVI
He advocated a return to fundamental theology.
The pope wrote and spoke strongly against relativism and secularism.
Relativism: Ethics depend on the individuals and groups that hold or follow them; truth is limited to the limits of the human mind.
Secularism: Rejection of religion or indifference about it.
He reinstituted the Tridentine Mass. It is conducted only in Latin and is viewed as more conservative than the new mass created by the Second Vatican Council in the 1960s. Some Catholic churches use the new Missal and some the Tridentine Mass.