Pope Paul VI
Mense Maio §2
Mense Maio: On Prayers During May for Preservation of Peace
2 We are delighted and consoled by this pious custom associated with the month of May, which pays honor to the Blessed Virgin and brings such rich benefits to the Christian people. Since Mary is rightly to be regarded as the way by which we are led to Christ, the person who encounters Mary cannot help but encounter Christ likewise. For what other reason do we continually turn to Mary except to seek the Christ in her arms, to seek our Savior in her, through her, and with her? To Him men are to turn amid the anxieties and perils of this world, urged on by duty and driven by the compelling needs of their heart, to find a haven of salvation, a transcendent fountain of life.
Source: Mense Maio (Vatican.va)