Mother love is the fuel that enables a normal human being to do the impossible.

Garretty’s aphorism frames maternal love as an energizing force—“fuel”—that converts ordinary human capacities into extraordinary endurance and achievement. The line suggests that what looks like “the impossible” is often accomplished not through exceptional talent but through devotion that supplies persistence, courage, and self-sacrifice. By specifying “a normal human being,” the quote democratizes heroism: the transformative element is not innate greatness but the motivating power of care for a child. It also implicitly comments on the often-unseen labor of motherhood, elevating it from private sentiment to a source of public, consequential action.