"The reason of which is easy enough to apprehend, for the frenzy and the spleen of both having the same foundation, we may look upon them as two pair of compasses equally extended, and the fixed foot of each remaining in the same centre, which, though moving contrary ways at first, will be sure to encounter somewhere or other in the circumference."
— Swift, Jonathan (1667-1745)
(pp. 97-8 in OUP ed.)
Reading Jonathan Swift, A Tale of a Tub and Other Works, eds. Angus Ross and David Woolley. (Oxford: Oxford University Press, 1986). Some text drawn from ebooks@Adelaide.
Note, the textual history is complicated. First published May 10, 1704. The second edition of 1704 and the fifth of 1710 include new material. Ross and Woolley's text is an eclectic one, based on the three authoritative editions.
See A Tale of a Tub. Written for the Universal Improvement of Mankind. To Which Is Added, an Account of a Battel Between the Antient and Modern Books in St. James's Library, 2nd edition, corrected (London: Printed for John Nutt, 1704). <Link to ESTC><Link to ECCO>