CHAPTER 12.
Mr Godwin's conjecture concerning the indefinite prolongation of human life--Improper inference drawn from the effects of mental stimulants on the human frame, illustrated in various instances--Conjectures not founded on any indications in the past not to be considered as philosophical conjectures--Mr Godwin's and Mr Condorcet's conjecture respecting the approach of man towards immortality on earth, a curious instance of the inconsistency of scepticism.
Mr Godwin's conjecture respecting the future approach of man towards immortality on earth seems to be rather oddly placed in a chapter which professes to remove the objection to his system of equality from the principle of population.

Unless he supposes the passion between the sexes to decrease faster than the duration of life increases, the earth would be more encumbered than ever.

But leaving this difficulty to Mr Godwin, let us examine a few of the appearances from which the probable immortality of man is inferred.
To prove the power of the mind over the body, Mr Godwin observes, "How often do we find a piece of good news dissipating a distemper?
How common is the remark that those accidents which are to the indolent a source of disease are forgotten and extirpated in the busy and active?
I walk twenty miles in an indolent and half determined temper and am extremely fatigued.

I walk twenty miles full of ardour, and with a motive that engrosses my soul, and I come in as fresh and as alert as when I began my journey.

Emotion excited by some unexpected word, by a letter that is delivered to us, occasions the most extraordinary revolutions in our frame, accelerates the circulation, causes the heart to palpitate, the tongue to refuse its office, and has been known to occasion death by extreme anguish or extreme joy.