next really significant step was made in 1674 (or thereabouts)
by Gottfried Leibniz in Germany. Leibniz, a mathematician,
physicist, philosopher, theologian, historian and inventor,
had a dream: to develop a generalized symbolic language
and an algebra to go with it, so that "the truth
of any proposition in any field of human inquiry
could be determined by simple calculation." This
unsuccessful, but he did invent the calculus and devise
and promote much of modern mathematical notation.
On the subject of calculation, Leibniz wrote, "It
is unworthy of excellent men to lose hours like slaves
in the labor of calculation which could safely be relegated
to anyone else if machines were used."