When an entire continent that is—to repeat—healthier, wealthier, and more secure than ever before ceases to produce the human future in the most elemental sense of “human future”—by refusing to have children—something is seriously awry. Something has gone dry in the soul. Whatever the economic , ideological, and cultural pressures involved, a lack of generosity toward the future is manifesting itself in willful barrenness. And that is, in the broad sense of the term “human spirit,” a spiritual problem. Indeed it is a spiritual crisis.

(source: Letter Number Ten | Xavier Rynne II, ed. | First Things)