Benedict XVI on Peace

"The effectiveness of commitment to peace depends on the concept that the world has of human life. If we want peace, we must defend life. This logic not only disqualifies war and terrorist acts but also any attempt on the life of the human being, a creature loved by God. The indifference or denial of what constitutes the true nature of man does not respect this grammar is the natural law inscribed on the human heart.

...

The task of education is to guide the maturation of the ability to make choices free and fair, that may go against prevailing opinions, fashions, political and religious ideologies. This is the price of the development of a culture of peace. Obviously, we must banish verbal or physical violence. This is always an attack on human dignity, both culprit and victim."

...

Believers today have an essential role of witness to the peace that comes from God and is a gift that is given to all the personal, family, social, political and economic life. You can not allow that evil to triumph by the passivity of good men. It would be worse to do nothing."

Benedict XVI, meeting with political leaders and civilians, Lebanon, 15 September 2012.

Cardinal Ratzinger on Giorgio La Pira

“.. an eminent figure in politics, culture and spirituality of the last century ... La Pira worked for the cause of fraternal existence among nations ... setting an example to present day Catholics for a common effort to promote this basic good in various spheres: in society, politics, the economy, cultures and among religions.” 

Cardinal Ratzinger, meeting with the National Association of Italian Local Authorities 26 April 2004.