These days there seem to be four schools of political economic thought.

Thomas contributed to economic thought as an aspect of ethics and justice.

This was then applied to the native influences on his economic thought.

Classical economics is the first modern school of economic thought.

Conventional economic thought suggests that funds should flow the other way.

He also carried out extensive research in the history of economic thought.

His interests included research into the information requirements for public policy (especially at the international level) and the history of economic thought.

Mitchell has also made valuable contributions to the history of economic thought.

He also made contributions to the history of economic thought.

This has been attributed to the early period in which he wrote, when economic thought was not yet fully developed.