But the breach of this rule cannot be a greater vice, than to teach others, that it is no moral rule, nor obligatory, would be thought madness, and contrary to that interest men sacrifice to, when they break it themselves.

Perhaps CONSCIENCE will be urged as checking us for such breaches, and so the internal obligation and establishment of the rule be preserved.
8.

Conscience no Proof of any innate Moral Rule.
To which I answer, that I doubt not but, without being written on their hearts, many men may, by the same way that they come to the knowledge of other things, come to assent to several moral rules, and be convinced of their obligation.

Others also may come to be of the same mind, from their education, company, and customs of their country; which persuasion, however got, will serve to set conscience on work; which is nothing else but our own opinion or judgment of the moral rectitude or gravity of our own actions; and if conscience be a proof of innate principles, contraries may be innate principles; since some men with the same bent of conscience prosecute what others avoid.
9.

Instances of Enormities practised without Remorse.
But I cannot see how any men should ever transgress those moral rules, with confidence and serenity, were they innate, and stamped upon their minds.