German idealism asks what role the mind plays in building knowledge and reality. Kant argued that we do not see things as they are in themselves: space, time and causality are forms that our reason imposes on experience. The idealists who followed went further and tried to show that reason, nature, history and freedom form a single system. The underlying question is: how does the thinking subject relate to the world it knows?
The movement flourished in Germany between the late 18th and mid 19th centuries. Kant opened the way with his three Critiques. Fichte and Schelling developed his ideas, and Hegel built a vast system in which spirit realizes itself in history through contradictions and their overcoming, known as dialectic. Schopenhauer started from Kant but rejected Hegel and saw a blind will, not reason, at the bottom of the world. Marx, existentialism and phenomenology all arose in dialogue with this tradition.
Core ideas
The mind actively shapes the way the world appears to us.
Reason, nature and history can be understood as a single system.
Human freedom is central to understanding morality and politics.
Where to start reading
Each thinker's starter book, picked for beginners.
