Found this quote ...

The "Critique of Pure Reason" is a continual sermon against the use of the category of thought beyond the limits of actual experience.
- Hermann von Helmholtz


True?

Sure, we would have to discuss how the categories influence our experience ... that two way street.
It sums up a lot of my critique of ethics, along the lines of N. Caputo's "Against Ethics". Once one starts letting the un-grounded category/concept do the work, things get dangerous. We have to tell the axe-wielding lunatic at the door where to find his innocent target.

Funny ... the mind behind the Critique is the same that came to that conclusion (about the importance of truth).