Full Idea
The categorical imperative smells of cruelty.
Gist of Idea
The categorical imperative smells of cruelty
Source
comment on Immanuel Kant (Groundwork of the Metaphysic of Morals [1785]) by Friedrich Nietzsche - On the Genealogy of Morals II.§6
Book Reference
Nietzsche,Friedrich: 'On the Genealogy of Morals/ Ecce Homo', ed/tr. Kaufmann,Walter [Vintage 1969], p.65
A Reaction
I presume this is because it is so pure and impersonal. Seems harsh. Nowadays we don't think pure just has to be cruel, but Nietzsche may have assumed it had to be.