There are different school of thoughts. The three most popular schools of thought at the end of the 19th century are Naturalism, Idealism and Scepticism.
There are different schools of thought in philosophy. Looking into the metaphysical level, there are four main types of philosophical schools of thoughts. They are;
Idealism and Realism are known as absolute or objective philosophies while Pragmatism and Existentialism are relative or subjective philosophies.
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