the two labyrinths

"Doctor Leibniz mentioned to me long ago that there are two sorts of intellectual labyrinths into which all thinking people are sooner or later drawn," said Caroline. "One is the composition of the continuum, which is to say, what is matter made of, what's the nature of space, et cetera. The other is the problem of free will: Do we have a choice in what we do? Which is like saying, do we have souls?"

                                          - Neal Stephenson, The System of the World, p. 678-9

}}{{