17 Letters of Cadmean

17 Letters of Cadmean
However, according to Isidore of Seville (The Etymologies I.iii.4-6), the Egyptian letters were devised by Isis (Io) when she came from Hellas into Egypt. Cadmus, he says, brought to Hellas seventeen letters (alpha, beta, gamma, delta, epsilon, zeta, iota, kappa, lambda, mu, nu, omicron, pi, rho, sigma, tau, and phi).
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