Closed intellectual systems equate formal perfection with truth. [definitional]
The closed system aims to unite all truths, in their most general concepts, into a structure of higher and lower elements which extend from a basic theme, arranged symmetrically and balanced in all directions. The decisive point is that it sees the proof of its substantive validity in its architectural and aesthetic completion, in the successful closure and solidity of its edifice. This represents the most extreme culmination of the formal principle: perfection of form as the ultimate criterion of truth. This is the view against which life, which is continuously creating and destroying forms, must defend itself.
Georg Simmel, on individuality and social…, loc. 859