It suffices therefore that nature and scripture do serve in such full sort that they both jointly [together], and not [separately] either of them, be so complete, that unto everlasting [happiness] we need not the knowledge of any thing more than these two may easily furnish our minds with on all sides; and therefore they which add traditions, as part of supernatural necessity of truth, have not the truth, but are in error.

—Of the Laws of Ecclesiastical Polity 1.14.5