Here's something else that Pope Benedict XVI wrote in one of his books:
"If we open our eyes, isn't what is said in the parable [of the wicked tenants] actually a description of our present world? Isn't this precisely the logic of the modern age, of our age? Let us declare that God is dead, then we ourselves will be God. At last we no longer belong to anyone else; rather, we are simply the owners of ourselves and of the world. At last we can do what we please. We get rid of God; there is no measuring rod above us; we ourselves are our only measure. The 'vineyard' belongs to us. What happens to man and the world next? We are already beginning to see it..." - Joseph Ratzinger (Pope Benedict XVI), Jesus of Nazareth - Vol I, p. 257
"Who could fail to see here a description of our world as well, in which the Christian is threatened by an anonymous atmosphere, by 'something in the air' that wants to make the faith seem ludicrous and absurd to him? And who could fail to see the poisoning of the spiritual climate all over the world that threatens the dignity of man, indeed his very existence? The individual human being, and even communities of human beings, seem to be hopelessly at the mercy of such powers." - Joseph Ratzinger (Pope Benedict XVI), Jesus of Nazareth - Vol I, p. 175