Fertility choices depend not only on the surrounding culture but also on economic incentives, which have important consequences for inequality, education and sustainability. This book outlines parallels between demographic development and economic outcomes, explaining how fertility, growth and inequality are related. It provides a set of general equilibrium models where households choose their number of children, analysed in four domains. First, inequality is particularly damaging for growth as human capital is kept low by the mass of grown-up children stemming from poor families. Second, the...