Part I: Theoretical perspectives. Common sources/different pathways -- Secularization: process and theory -- Rational choice theory -- Modernity: a single or plural construct? -- Methodological challenges -- Part II: Substantive issues. Mainstream religions in the Western world -- Minorities and margins -- Demanding attention: fundamentalisms in the modern world -- Globalization and the study of religion -- Religion and the everyday -- Conclusion: revisiting the agenda.