 Miyazaki felt frustrated growing up in the Shōwa period from 1955–65 because "nature — the mountains and rivers — was being destroyed in the name of economic progress".Peter Schellhase of "The Imaginative Conservative" identified that several antagonists of Miyazaki's films "attempt to dominate nature in pursuit of political domination, and are ultimately destructive to both nature and human civilization".Miyazaki is critical of capitalism, globalization, and their effects on modern life.