Pag.

be a different relation between the e-
vent obferved and the principle of
Change, and in fome of them a dif-
ferent principle of Change from what
there is in cafes of Caufe and Effect
inanimate matter; yet there is ei-
ther no optional or difcretionary power,
very little of it, in the fubject,
with respect to the Change that takes

or but

place,

193

IX.

SECT.

Inference from the doctrine of the Con-
ftant Conjunction of Motive and Action,
which is demonftrated as a neceffary
confequence of it, and yet is notoriously
falfe in point of fact,

Mathematical demonftration, that the
doctrine of the Conftant Conjunction
of Motive and Action is abfurd, as be-
ing inconfiftent with itself,

. 221

243

SECT.

Pag.

XI.

SECT.

Illuftrations of the abfurdities and inconfiftencies which are neceffary confequences of the doctrine of the Confant Conjunction of Motive and Action,

SECT. XII..

249

Obfervations on the cafe of the increase or concurrence of Phyfical Caufes and of Motives refpectively-The refult with respect to Phyfical Caufes confiftent with the principle of Conftant Conjunction. The refult with respect to Motives only fometimes confiftent with that principle, and often repugnant to it, but always confiftent with the vulgar notion of Motive.Observations on the parallel cafe of the increase or concurrence of the external, partial, exciting Caufes in Phyfiology, 267

SECT. XIII.

Obfervations on fome circumftances that have contributed to conceal from the

view of men of Science the abfurdities and inconfiftencies which are neceffarily implied in the doctrine of the Conftant Conjunction of Motive and Action,

SECT.

Pag.

296

XIV.

Obfervations on an ancient paradox, with respect to the notion of Motive, founded on the analogy between Agent and Motive, and the ambiguity of common language.-Analogy between it and the modern philofophical doctrine of

Neceffity,

SECT.

304

XV.

General illuftration and confirmation of the reafonings in the nine preceding fections, from Sir ISAAC NEWTON'S reafonings in his Principia.-Commentary on his argument in proof of his firft corollary from the three laws of Motion. That corollary and argument refolvable into the principles of Inertia of the fubject, and conftant conjunction of Cause and Effect, or into

the

the latter principle fingly, as it im-
plies the former.-Impoffibility of af-
figning a reafon, confiftent with the
principles, for the different refult, in
the cafe of lifeless bodies, and in that
of living perfons.-Abfurdity of fuch
an attempt.-Either the inferences muft
be admitted, or the latter principle must
be given up, with respect to Motives
and Actions,

Pag.

Second part of the Dilemma ftated.-The

Inertia of Mind.-Irrefiftible influence

of Motives which are not conftantly

conjoined with their respective Actions

or Effects, but occafionally feparated

from them.-Repugnance of this oc-

cafional feparation or conjunction to the

affumed principle, That every Event

or Change is an Effect implying a

Caufe.-Impoffibility of its proceeding

from any Caufe conftantly conjoined

with its Effect.-Neceffity of its ci-

ther coming to pass without any Cause,

and purely by chance, or elfe being

b. 2 produced:

310

produced by an Agent having optional

or difcretionary power to separate or

to conjoin Motives and Actions.—Sup-

pofition of its coming to pass without

any caufe ftated, and confidered on the

principle of the doctrine of Chances.

-Neceffary inferences from it, that

are falfe, and repugnant to the uni-

verfal notion of the relation of Motive

and Action,

SECT.

Pag.

337

XVII.

The common doctrine of Neceffity stated,

with the modification, that the ftrong-

eft Motive alone is conjoined with its

proper Action, and that all the weak-

er and oppofing Motives are fepara-

ted from theirs. Various circumftan-

ces of falfity and abfurdity in this

doctrine, which are to be demonftra-

ted. — Preliminary Questions ftated.

-What is meant by the force or

Strength of fuch Motives?-What is

the test or measure of their firength? 355

SECT.