This lecture explores the concept of human capital, focusing on the importance of skills, knowledge, and health in the workforce. It delves into the role of human capital in economic development, workforce productivity, and individual well-being. The lecture also discusses the idea of social capital, emphasizing the significance of trust, cooperation, and shared values in society. Additionally, it examines the interplay between different types of capital, such as human, natural, and manufactured, in sustainable development. The implications of investing in education, health, and environmental protection on overall well-being are highlighted.