This power becomes ...

This power becomes particularly irresistible when exercised by those who, because they hold and control money, are able also to govern credit and determine its allotment, for that reason supplying, so to speak, the lifeblood to the entire economic body, and grasping, as it were, in their hands the very soul of production, so that no one dare breathe against their will.
 Pope Pius XI

Quotes from the same author

However we may pity the mother whose health and even life is imperiled by the performance of her natural duty, there yet remains no sufficient reason for condoning the direct murder of the innocent.
 Pope Pius XI
What could ever be a sufficient reason for excusing in any way the direct murder of the innocent? This is precisely what we are dealing with here. Whether inflicted upon the mother or upon the child, it is against the precept of God and the law of nature: 'Thou shalt not kill.'
 Pope Pius XI
Among the various supplications with which we successfully appeal to the Virgin Mother of God, the Holy Rosary without doubt occupies a special and distinct place. This prayer, which some call the Psalter of the Virgin or Breviary of the Gospel and of Christian life, was described and recommended by Our Predecessor of happy memory, Leo XIII
 Pope Pius XI
For they have always unanimously maintained that nature, rather the Creator Himself, has given man the right of private ownership not only that individuals may be able to provide for themselves and their families but also that the goods which the Creator destined for the entire family of mankind may through this institution truly serve this purpose.
 Pope Pius XI
Those wretches tainted with the error of Indifferentism and Modernism hold that dogmatic truth is not absolute, but relative: that is, that it must adapt itself to the varying necessities of the times and the varying dispositions of souls, since it is not contained in an unchangeable revelation, but is, by its very nature, meant to accommodate itself to the life of man.
 Pope Pius XI