Louis Leon Thurstone (1887–1955) transformed the scientific study of human intelligence by challenging the idea of a single, unitary “g-factor” and proposing instead a set of Primary Mental Abilities, including verbal comprehension, numerical ability, inductive reasoning, spatial visualization, memory, perceptual speed, and word fluency (Thurstone, 1938; Thurstone & Thurstone, 1941). By developing sophisticated psychometric methods such as multiple-factor analysis, he demonstrated that intelligence is multidimensional, fluid, and richly varied across individuals. This contribution not only reshaped modern psychological testing and educational assessment but also carries profound value for personal wellbeing and societal health: it affirms that people possess diverse strengths, encourages environments that cultivate multiple forms of ability, and promotes more equitable systems in schools, workplaces, and communities. In highlighting the many ways individuals can excel, Thurstone’s work supports a more humane and empowering understanding of human potential. God’s gifts to each individual vary greatly but all have value. In relation to spiritual gifts, the apostle Paul writes, “Having then gifts differing according to the grace that is given to us, let us use them” (Romans 12:6). The same admonition could be applied to individual giftings of every kind, including the abilities of the mind. It is good to ask ourselves whether we are making the best use of the mental abilities God has given us.