the supposition of the Cartesians there is but one general law for the
union of spirits and bodies, he will have it that God gives a particular
law to each spirit; from whence it seems to result that the primitive
constitution of each spirit is specifically different from all others. Do
not the Thomists say, that there are as many species as individuals in
angelic nature?'

Leibniz acknowledged Bayle's note in a further reply, which is written as
though for publication. It was communicated to Bayle, but it was not in
fact published. It is dated 1702. It may be found in the standard
collections of Leibniz's philosophical works. It reads almost like a sketch
for the _Theodicy_.

The principal point developed by Leibniz is the richness of content which,
according to him, is to be found in each 'simple substance'. Its simplicity
is more like the infinitely rich simplicity of the divine Being, than like
the simplicity of the atom of Epicurus, with which Bayle had chosen to
compare it. It contains a condensation in confused idea of the whole
universe: and its essence is from the first defined by the part it is to
play in the total harmony.

As to the musical score ('tablature of notes') which the individual soul
plays from, in order to perform its ordained part in the universal harmony,
this 'score' is to be found in the confused or implicit ideas at any moment
present, from which an omniscient observer could always deduce what is to
happen next. To the objection 'But the created soul is not an omniscient
observer, and if it cannot read the score, the score is useless to it',[47]
Leibniz replies by affirming that much spontaneous action arises from
subjective and yet unperceived reasons, as we are all perfectly aware, once
we attend to the relevant facts. All he claims to be doing is to generalize