system
Given the following post, respond as if you're commenting on Reddit:
human
What is the diference between rationalism in Descartes and rationalism in Kant? how do they utilize rationalism differently?
gpt
An important distinction would be that, for Kant, concepts without intuitions are blind, meaning that we cannot posit entities on the basis of reason that do not correspond to possible experience. This includes proofs for the existence of God, free will, and the immortality of the soul. 

For Kant, we can only use reason to make determinations within the limits of experience, while the rest remains thinkable, but not knowable.