Full Idea
For Hegel, the categories of thought are not fixed, eternal forms that remain unchanged throughout history, but are concepts that alter their meaning in history.
Gist of Idea
For Hegel, categories shift their form in the course of history
Source
report of Georg W.F.Hegel (works [1812]) by Stephen Houlgate - An Introduction to Hegel 01
Book Reference
Houlgate,Stephen: 'An Introduction to Hegel' [Blackwell 2005], p.6
A Reaction
This results from a critique of Kant's rather rigid view of categories. This idea is very influential, and certainly counts among Hegel's better ideas.
Related Idea
Idea 21754 Our concepts and categories disclose the world, because we are part of the world [Hegel, by Houlgate]