The document discusses the differences between classical liberalism and modern liberalism. Classical liberalism focused on economic freedom and individualism, while modern liberalism added principles like the welfare state and human rights. The first source supports modern liberalism's view that government welfare is necessary for individuals to survive economically. The second and third sources are more aligned with classical liberalism, arguing that under free markets, competition and self-interest allow people to provide for themselves if they work hard. When compared, the second and third sources criticize modern liberalism for interfering with classical liberal principles like competition through government welfare programs.