Science as knowledge referring to data and structuring them in interrelations is, according to Kant, a system. At the same time, science exhibits the characteristic feature of reason as the legislative faculty. These two aspects appear to be interrelated because science is grounded in reason. Reason is a system, though its employment is pure. It "can be conducted in accordance with principles unity,rinci les of uni the material being provided by experience alone.¹ The systematic aspect of science is due to its relation to reason; it cannot be due to its reference to data or experience. Hence Kant says that "...Human reason is by nature architectonic. That is to say, it regards all our knowledge as belon ng to a possible system..."² We find no explicit exposition or gi justification for that statement which can be seen as an attempt to answer why reason by its very nature is systematic or architectonic. Architectonics is the art of constructing systems. It is a doctrine of the scientific in our knowledge and therefore necessarily forms part of the doctrine of method.³ According to this statement, "architectonic" and "system" seem to b synonymous descriptions of the same aspect or feature of science or reason, science being the manifestation of reason.