I was much an enemy to monarchies before I came to Europe. I am ten thousand times more so, since I have seen what they are. There is scarcely an evil known in these countries, which may not be traced to their king, as its source, nor a good, which is not derived from the small fibres of republicanism existing among them.

Memoir, correspondence, and miscellanies from the papers of T. Jefferson (ed. 1829)