Full Idea
Philosophy is the replacement of category-habits by category-disciplines.
Gist of Idea
Philosophy aims to become more disciplined about categories
Source
Gilbert Ryle (The Concept of Mind [1949], Intro p.8), quoted by Ofra Magidor - Category Mistakes 1.2
Book Reference
Magidor,Ofra: 'Category Mistakes' [OUP 2013], p.10
A Reaction
I rather like this. It fits the view the idea that metaphysics aims to give the structure of reality. If there are not reasonably uniform categories for things, then reality is indescribable. Improving our categories seems a thoroughly laudable aim.