The obligation to earn one's bread by the sweat of one's brow also presumes the right to do so. A society in which this right is systematically denied, in which economic policies do not allow workers to reach satisfactory levels of employment, cannot be justified from an ethical point of view, nor can that society attain social peace.

Limitation of one's freedom might seem to be something negative and unpleasant, but love makes it a positive, joyful and creative thing. Freedom exists for the sake of love.

If humanity today succeeds in combining the new scientific capacities with a strong ethical dimension, it will certainly be able to promote the environment as a home and a resource for...all...and will be able to eliminate the causes of pollution and to guarantee adequate conditions of hygiene and health for small groups as well as for vast human settlements.

The vocation and mission of the faithful can only be understood in light of a renewed awareness of the Church as sacrament or sign and instrument of intimate union with God, of the unity of the whole of mankind, and of the personal duty to adhere more closely to her.

The [abortion] excommunication affects all those who commit this crime with knowledge of the penalty attached, and thus includes those accomplices without which the crime would not have been committed.

There is no peace without justice, and no justice without forgiveness.

The only way to peace is forgiveness.