This paper applies a quasi-experimental design to the problem of the causal relation between intellectual and political movements. A sample of 122 consecutive “generations” (or 20-year periods) was drawn from European history (540 B.C. to 1900 A.D.). A cross-lagged correlation analysis indicated the following intergenerational influences: (1) political fragmentation has a positive impact on the emergence of empiricism, skepticism-criticism-fideism, materialism, temporalism, nominalism, singularism, and the ethics of happiness; (2) war has a negative impact on the appearance of most of these just mentioned beliefs; (3) skepticism-criticism-fideism and perhaps materialism have a positive influence on the appearance of war; and (4) civil disturbances tend to polarize beliefs on all major philosophical issues.