He voiced a conspiracy theory in 1795:
In war, the public treasuries are to be unlocked; and it is the executive hand which is to dispense them.(Toxins of Power Blog, emphasis added). The above quote is from his "Political Observations," April 20, 1795, in Letters and Other Writings of James Madison, Volume IV, page 491.
In war, the honors and emoluments of office are to be multiplied; and it is the executive patronage under which they are to be enjoyed; and it is the executive brow they are to encircle.
The strongest passions and most dangerous weaknesses of the human breast; ambition, avarice, vanity, the honorable or venal love of fame, are all in conspiracy against the desire and duty of peace.
This is the type of "shadow movement" or "shadow government" talked about in a previous post; meaning these conspiracies are not individual people conspiring, instead they are unseen forces at work against us all.