To desire grace without recourse to the Virgin Mother is to desire to fly without wings.

That which does not correspond to the truth or to the moral norm possesses, objectively, no right either to existence or to propagation or to action.

True science discovers God in an ever-increasing degree — as though God were waiting behind every door opened by science.

One Galileo in two thousand years is enough.

You lose nothing through peace. You can lose everything through war.

Henceforth it will be the task of this Sacred Congregation not only to examine carefully the books denounced to it, to prohibit them if necessary, and to grant permission for reading forbidden books, but also to supervise, ex officio, books that are being published, and to pass sentence on such as deserve to be prohibited.

If a worker is deprived of hope to acquire some personal property, what other natural stimulus can be offered him that will inspire him to hard work, labor, saving and sobriety today, when so many nations and men have lost everything and all they have left is their capacity for work?