History cannot be logically constructed any more than a scientific event, if only because it involves the process of vague and indefinable concepts which are about to crystallize. The more detailed and differentiated the description for any field of thought, the more complex, interrelated, and mutually dependent in definition will be its concepts. They become a tangle impossible to unravel logically, an organic structure produced by mutual development and with interacting components.

Autor: Ludwik Fleck