The symbolic language created by Peano plays a very grand rôle in these new researches.
This method is due partly to Peano, partly to another Italian named Fano.
Two hundred years ago, Leibniz foresaw the science which Peano has perfected, and endeavoured to create it.
Dedekind and Peano have worked out such ordinal theories of the number concept.
All these, however, are a concession, and are swept away by Professor Peano.
