The dominant social thought shapes the institutionalized order of society... and the malfunctioning of established institutions in turn alters social… - Theodore Schultz

Activities that improve human capabilities [can be divided into] five major categories: (1) health facilities and services, broadly conceived to include all expenditures that affect the life expectancy, strength and stamina, and the vigor and vitality of a people; (2) On-the job training, including old-style apprenticeship organized by firms; (3) formally organized education at elementary, secondary and higher levels; (4) study programs for adults that are not organized by firms, including extension programs in agriculture; (5) Migration of individuals and families to adjust to changing job opportunities.

Economists have long known that people are an important part of the wealth of nations.

Most people in the world are poor. If we knew the economy of being poor, we would know much of the economics that really matter. Most of the world's poor people earn their living in agriculture. If we knew the economics of agriculture, we would know much of the economic of being poor.