The rule for interpreting Scripture should be the natural reason common to all, not supernatural light or outside authority

For as the highest power of Scriptural interpretation belongs to every man, the rule for such interpretation should be nothing but the natural light of reason which is common to all - not any supernatural light nor any external authority; moreover, such a rule ought not to be so difficult that it can only be applied by very skilful philosophers, but should be adapted to the natural and ordinary faculties and capacity of mankind.