The church upholds the inherent dignity of all human beings, even the most sin-filled, and believes in hope, conversion and mercy, he said.
There is always room for conversion, he said, and forgiveness does not mean being naive about the real evil the human being is capable of committing.
The death penalty does not solve much; a victim still feels loss and crime is not deterred, he said.
Communities must strive to promote the common good, and it's dubious "that you can kill someone for the good of all," he said.
"The beauty of forgiveness must also be truly discovered; it's this that saves us," said Di Ruzza.
Otherwise, "by killing the just or the unjust without understanding that they have dignity, we will find ourselves after 2,000 years in the same courtyard shouting, 'Kill him!,' like they did with Jesus."
"God forgave us. He did not call us to death. Jesus let us overcome death" so as to more fully embrace life, he said.