Money and career advancement aside, graduate education contributes to a rich and full quality of life. If you are an engineer and you drive under a bridge, you see more than a bridge; you see stress dynamics. Everything you see, do, touch, or think about will be influenced by your graduate education. At least one longitudinal study of college-educated workers found a lockstep relationship between education and reports of satisfaction with life (not just work life, but all aspects of life: work, family, social, financial, and so on). Plato’s dialogue, Philebus, amounts to an elaborate argument in favor of the intellectual life. Don’t trust me; trust Socrates as quoted by Plato.