the only sense I could make of this metaphor, but why would he leave out external
    forces and environments?  These are the ultimate sources of both particles and
    human thought.

HP: Finally, if he means by &quot;deduce&quot; what is normally meant,
    and his definition is considered axiomatic, then he is
    arriving at his logic by formal means. 

| It is from this definition [axiom] that I deduce the
| principles of logic by mathematical reasoning . . .

HP: So I would agree it is a &quot;formal 