Immanuel Kant Quotes
To Perpetual Peace
This seems to be the origin of the notion that democracies and republics are less likely to war with others than monarchies or dictatorships.
Immanuel Kant, 1724-1804, German Philosopher, Title of Essay
Sourced by: Eigen's Political and Historical Quotations
The veracity depends on how one defines a democracy. Serbia attacked Croatia and Bosnia—all fledgling democracies. Argentina, claiming to be a democracy, attacked England by invading the Falkland Islands. Hitler was elected in Germany in a free and fair election, and once they started their aggressive war Germany became a Fascist Dictatorship. What appears to be the case is that stable industrial democracies never make war on each other.
Immanuel Kant was a German philosopher and one of the central Enlightenment thinkers. Kant's comprehensive and systematic works in epistemology, metaphysics, ethics, and aesthetics have made him one of the most influential figures in modern Western philosophy.