Kant - What's Left of Reason?

Kant says experience never really is of what is absolutely out there, external to us. It's always adulterated with our own activity. If you strip all that away and just consider the form of willing in itself, then kant says only actions that could be universal laws can have a categorical imperative. An absolutely good will, whose principle must be a categorical Imperative, will therefore be undetermined  in respect to all objects contain only the form ofwill as autonomy.