Abstract
This chapter considers four areas in the differences between Vygotsky's concept of reason and ‘Enlightenment rationality’ in its familiar characterisation. These areas cover: (1) foundationalism and anti‐foundationalism, (2) the conception of science, (3) the conception of development and (4) idealism and materialism. The last is developed more by Ilyenkov, although, given its Hegelian and Spinozist provenance, it can be reasonably interpreted as part of the general direction of Vygotsky's work. Two indications of the importance of Hegel for understanding Vygotsky are: first, the absence of an unbridgeable epistemological chasm between thought and world, and second, the conception of development as a non‐linear process embedded in historical resources. Marx's and Hegel's ideas of history and development influenced every aspect of Vygotsky's thinking on concepts. Vygotsky's work provides no blueprint for teachers and educational administrators, but it does provide a frame of ideas within which questions concerning education can fruitfully be pursued.