This is most evidently confirmed by the examples of sick persons who have
been cured by joy. Let one whom a terrible home-sickness has wasted to a
skeleton be brought back to his native land, and the bloom of health will
soon be his again; or let us enter a prison in which miserable men have
for ten or twenty years inhabited filthy dungeons and possess at last
barely strength to move,--and let us tell them suddenly they are free;
the single word of freedom will endow their limbs with the strength of
youth, and cause dead eyes to sparkle with life. Sailors, whom thirst
and famine have made their prey during a long voyage, are half cured by
the steersman's cry of "Land!" and he would certainly greatly err who
ascribed the whole result to a prospect of fresh food. The sight of a
dear one, whom the sufferer has long desired to see, sustains the life
that was about to go, and imparts strength and health. It is a fact,
that joy can quicken the nervous system more effectually than all the
cordials of the apothecary, and can do wonders in the case of inveterate
internal disorders denied to the action of rhubarb and even mercury. Who
then does not perceive that the constitution of the soul which knows how
to derive pleasure from every event and can dissipate every ache in the
perfection of the universe, must be the most beneficial to the whole
organism? and this constitution of the soul is--virtue.



S 14.--Mental pain undermines the Welfare of the Whole Organisms.


In the very same way, the opposite result is brought about by a
disagreeable affection of the mind. The ideas which rule so intensely
the angry or terrified man may, as rightly as Plato called the passions a
fever of the soul, be regarded as convulsions of the organ of thought.