duad

Updated: January 15, 2026

Diogenes Laertius thus sums up his doctrines, which were that "the monad is the beginning of every thing. From the monad proceeds an indefinite duad. From the monad and the duad proceed numbers, and from numbers signs, and from these lines, of which plain figures consist.

John Lord - The Old Roman World, : the Grandeur and Failure of Its Civilization.