ИСТИНА

Leibniz's lifelong devotion to the idea of the characteristica universalis found its starting point in his early work Dissertatio De Ars Combinаtorica. Already there the conceptualization of sign notion plays a fundamental role in his entire scientific and philosophic thought. While left unfinished, this project produced a crop of important results in the various fields of knowledge, which, like an Ariadne’s thread, trace paths in the maze of sign-related topics in Leibniz’s legacy. There belong sign combination rules or combinatorics, including binary calculus; definition of sign and its place in the process of cognition; the problem of primary irreducible notions and their alphabet; ars memoriae (mnemonics) and the theory of cognitio caeca (blind cognition); etc.