Conservatism is difficult to define as it can refer to desires to conserve different traditions or institutions. Classical conservatives sought to preserve aristocratic hierarchy and social order through strong government restraint, while modern conservatives like Thatcher and Reagan advocated for smaller government and free market capitalism. Edmund Burke is seen as the founder of conservatism, emphasizing that institutions and traditions evolve gradually over time through trial and error rather than being designed through human reason, and should change slowly to avoid chaos. Burke believed revolutions tend to end badly and society cannot be instantly redesigned.