By this time we presume the Reader is convinc'd, that private Interest too often influences many of our Modern Physicians, and makes them prescribe such Medicines as tend most to the Apothecaries Gain, because the People give the Apothecary Power of appointing the Physician; we have shewn that those costly pretended Medicines, which so much raise the Sum in the Bill, have no real Virtue; that the greatest Part of the most senative grow in our own Gardens; that if some few are fetch'd from foreign Parts, they are used in so small Quantities, that the Doses are of the lowest Price: And consequently you will very plainly see, that the long and high charg'd Bill after a Fit of Sickness, is more the Effect of the Collusion betwixt the Doctor and Apothecary, together with your own Folly of desiring of it, than either the Prices of the Medicine, or the Necessity of so many Doses. I dare say, my Reader now thinks it high time to take Care of himself, to believe that the seldomer the Physician or Apothecary are employ'd, the less Risque he runs in his Health or Fortune, that he is not upon every slight Indisposition, or ordinary Sickness to call upon their Help, whereby very often the Remedy proves worse than the Disease; that your Constitution will endeavour to preserve it self, and will effect it in most of the common Distempers, but with ill Medicines those will become dangerous, and will be made every Day more malignant. Take the Counsel of your most observing and experienced Friend, who has no Byass to divert him from the only Care of your Health; but avoid the Emperick, who will, instead of procuring the Ease of your Thoughts and Repose, and prescribing the Rules of your Diet, and permitting Nature to subdue the Disease, affright you with the greatest Danger, disturb you, and fill your Chamber, or both, with the inflaming and pernicious Cordials, the Bolus's and Draughts, till he has cured his own Distemper by the Number of Articles he shall enter into the Bill. That it is in the Power of every Man to become his own Physician, who needs no other Helps of supporting a good, and correcting a bad Constitution, than by observing a sober and regular Life; there is nothing more certain, than that Custom becomes a second Nature, and has a great Influence upon our Bodies, and has too often more Power over the Mind than Reason it self? The honestest Man alive, in keeping Company with Libertines, by degrees forgets the Maxims of Probity he before was used to, and naturally falls into those Vices with his Companions; and if he be so happy as to acquit himself, and to meet with better Company, then Virtue reassumes its first Lustre, and will triumph in its Turn, and he insensibly regains the Wisdom that he had abandoned. In a Word, all the Alterations that we perceive in the Temper, Carriage, and Manners of most Men, have scarce any other Foundation, but the Force and Prevalency of Custom.