Private property is a natural fruit of labor, a product of intense activity of man, acquired through his energetic determination to ensure and develop with his own strength his own existence and that of his family, and to create for himself and his own an existence of just freedom, not only economic, but also political, cultural and religious.
Pope Pius XII[Parental] authority must be tempered...with loving kindness and patient encouragement. To temper authority with kindness is to triumph in the struggle which belongs to your duty as parents...All those who would advantageously rule over others, must as an essential element, first dominate themselves, their passions, their impressions.
Pope Pius XIIHenceforth 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.
Pope Pius XII