In the use of pure reason its concepts, or transcendental ideas, aim at unity of all conditions of thought.
The product of the pure reason (Vernunft) or intuitive faculty.
This faculty gives a synthesis for conduct, as pure reason gave a synthesis for intelligence.
But I also believe that there are no such things as pure ideas or pure reason.
Both are evidently actuated by instinctive forces which lie far beneath the level of pure reason.
This dialectical argument I shall call the ideal of pure reason.
Science does not proceed therefore either from pure experience or from pure reason; whence does it really come?
From this point of view, there is properly no antithetic of pure reason.
This is one of the puzzles and perplexities which hang a veil between God, who is pure reason, and this outside world.
Besides, we have already discussed this subject in the antinomy of pure reason.