HKB
II. This Uneasiness, whenever felt, produces Desire to be freed from it, great in exact proportion to the Uneasiness.
Thus is Uneasiness the first Spring and Cause of all Action; for till we are uneasy in Rest, we can have no Desire to move, and without Desire of moving there can be no voluntary Motion. The Experience of every Man who has observ'd his own Actions will evince the Truth of this; and I think nothing need be said to prove that the Desire will be equal to the Uneasiness, for the very Thing implies as much: It is not Uneasiness unless we desire to be freed from it, nor a great Uneasiness unless the consequent Desire is great.
I might here observe, how necessary a Thing in the Order and Design of the Universe this Pain or Uneasiness is, and how beautiful in its Place! Let us but suppose it just now banish'd the World entirely, and consider the Consequence of it: All the Animal Creation would immediately stand stock still, exactly in the Posture they were in the Moment Uneasiness departed; not a Limb, not a Finger would henceforth move; we should all be reduc'd to the Condition of Statues, dull and unactive: Here I should continue to sit motionless with the Pen in my Hand thus------and neither leave my Seat nor write one Letter more. This may appear odd at first View, but a little Consideration will make it evident; for 'tis impossible to assign any other Cause for the voluntary Motion of an Animal than its uneasiness in Rest. What a different Appearance then would the Face of Nature make, without it! How necessary is it! And how unlikely that the Inhabitants of the World ever were, or that the Creator ever design'd they should be, exempt from it!
I would likewise observe here, that the VIIIth Proposition in the preceding Section, viz. That there is neither Merit nor Demerit, &c. is here again demonstrated, as infallibly, tho' in another manner: For since Freedom from Uneasiness is the End of all our Actions, how is it possible for us to do any Thing disinterested?--How can any Action be meritorious of Praise or Dispraise, Reward or Punishment, when the natural Principle of Self-Love is the only and the irresistible Motive to it?
III. This Desire is always fulfill'd or satisfy'd,
In the Design or End of it, tho' not in the Manner: The first is requisite, the latter not. To exemplify this, let us make a Supposition; A Person is confin'd in a House which appears to be in imminent Danger of Falling, this, as soon as perceiv'd, creates a violent Uneasiness, and that instantly produces an equal strong Desire, the End of which is freedom from the Uneasiness, and the Manner or Way propos'd to gain this End, is to get out of the House. Now if he is convinc'd by any Means, that he is mistaken, and the House is not likely to fall, he is immediately freed from his Uneasiness, and the End of his Desire is attain'd as well as if it had been in the Manner desir'd, viz. leaving the House.
All our different Desires and Passions proceed from and are reducible to this one Point, Uneasiness, tho' the Means we propose to ourselves for expelling of it are infinite. One proposes Fame, another Wealth, a third Power, &c. as the Means to gain this End; but tho' these are never attain'd, if the Uneasiness be remov'd by some other Means, the Desire is satisfy'd. Now during the Course of Life we are ourselves continually removing successive Uneasinesses as they arise, and the last we suffer is remov'd by the sweet Sleep of Death.
IV. The fulfilling or Satisfaction of this Desire, produces the Sensation of* Pleasure, *great or small in exact proportion to the Desire.