25 Perhaps - God grant it - one may hope that this hour of direct need may bring a change of outlook and sentiment to those many w ho, till now, have walked with blind faith along the path of popular modern errors unconscious of the treacherous and insecure ground on which they trod. Perhaps the many who have not grasped the importance of the educational and pastoral mission of the Church will now understand better her warnings, scouted in the false security of the past. No defense of Christianity could be more effective than the present straits. From the immense vortex of error and anti-Christian movements there has come forth a crop of such poignant disasters as to constitute a condemnation surpassing in its conclusiveness any merely theoretical refutation.
Source: Summi Pontificatus (Vatican.va)