What is a question about this article? If the question is unanswerable, say "unanswerable".

The Constitution does not explicitly indicate the pre-eminence of any particular branch of government. However, James Madison wrote in Federalist 51, regarding the ability of each branch to defend itself from actions by the others, that "it is not possible to give to each department an equal power of self-defense. In republican government, the legislative authority necessarily predominates."

Who wrote that it was possible to give equal power of self defense to each department?
unanswerable