Claim. Purity requires both women’s chastity and men’s purposefulness, because both sexes must protect love until its proper time.
Elaboration. SMM says young people should protect their bodies and not misuse love before the time is right (CSG 4.12 §5, 26-160, 1969.10.25). The section explicitly extends chastity to men as well as women and connects adolescent purity to indemnifying Adam and Eve’s youthful failure. “Chastity for woman and purposefulness for man” means women should know one love and men should move unwaveringly toward God’s purpose. The claim is asymmetrically worded in the source but is applied to both men and women as a shared discipline of love.