Feudalism was one of the social systems in medieval Europe.

He believes in the philosophy of materialism.

He has a separatist ideology.

His paintings are strongly influenced by expressionism.

He strongly believes in the philosophy of positivism.

He is deeply interested in existentialist philosophy.

He is a pragmatist, always looking for practical solutions.

He thought about the problem from a utilitarian perspective.

He is a realist, not a dreamer.

He has a spirit of altruism and always acts for the benefit of others.