In the western philosophy after I. Kant many philosophical systems are directly or indirectly connected with the Kant doctrine. It both fikhteanstvo, and hegelianism, and neokantianstvo, etc. At the present stage of philosophical development it is possible to speak about communication with I. Kant's philosophy of such directions in philosophy as phenomenology, existentialism, a hermeneutics, etc.
Before to start a statement of the argument of I. Kant, it is necessary to characterize that system of concepts which I. Kant in the analysis uses and which thanks to I. Kant entered into philosophical tools as necessary and used as basic by modern philosophical thought.
Surveying examples of human spirit, I. Kant sees some capable to apply for generality and reliability of the knowledge, that is to apply for the status of scientific character: it is mathematics and theoretical natural sciences. Therefore, I. Kant thinks, it is necessary to open that basis which does mathematical knowledge general and reliable, and then to apply the received knowledge as criterion of scientific character of metaphysics, that is philosophy.
The conclusion which is drawn by I. Kant from the aforesaid, is unambiguous: as ideas of pure reason are only ideas and no more than that as these ideas have no analog in experience, cannot be investigated by means of experience and therefore their validity or falsehood cannot be proved in the theoretical way.
According to I. Kant, "we can think and make clear for ourselves expediency which has to be the basis even our knowledge of internal possibility of many natural things not differently as imagining them and the world in general as a product of the reasonable reason (bog1
According to I. Kant if we do not have concepts of cause and effect of our mind. before any possible experience, we will never reveal, we will not notice this communication between sensory perception of our experience.