Research on feature detectors and critical periods in physiological psychology showed how experience sculpts the brain: in landmark experiments, David Hubel and Torsten Wiesel demonstrated in 1959–1962 that neurons in the primary visual cortex act as feature detectors, responding selectively to edges, orientation, and movement, and in 1963they revealed critical periods by showing that the loss of patterned vision early in life permanently altered cortical organisation, work that later earned the 1981 Nobel Prize. Together with earlier ethological insights on sensitive periods (e.g., Konrad Lorenz, 1935), these findings established that while the brain is biologically prepared, it requires timely, appropriate input to develop normally, a truth that resonates with a Christian perspective affirming both God’s intentional design of the mind (Psalm 139:13–16) and the formative power of nurture and renewal (Proverbs 22:6; Romans 12:2), as well as the call to steward our embodied lives (1 Corinthians 6:19–20) and to grow holistically in wisdom and stature (Luke 2:52). For personal wellbeing, this work underlines the importance of early care, enriched environments, and lifelong habits that support neural health, and for societal health, it provides a scientific and moral rationale for investing in early childhood support, education, and rehabilitation, policies that honour human dignity, reduce preventable disability, and cultivate communities capable of perceiving, discerning, and loving well.