46 Since, however, solid, sincere and tranquil peace has not yet appeared in souls and among peoples, let all strive with pious prayer to fully and fruitfully obtain and consolidate it, so that, just as the Most Blessed Virgin brought forth the Prince of Peace, so also may she, by her protection and patronage, unite men in friendly agreement. For then only can they enjoy whatever peaceful prosperity may be given to us during the course of this mortal life - when they are not divided by rivalries, not wretchedly torn by dissensions, not forced into opposite camps by threats and intrigues; but when, joining hands in friendly affection, they exchange the kiss of peace, that peace "which is tranquil liberty" (Cic, Phil . II. 44), and which, guided by justice and nurtured by charity, unites in one harmonious family the various classes of citizens, nations and people.
Source: Fulgens Corona (Vatican.va)