If you could be alarmed into the semblance of modesty, you would charm everybody; but remember my joke against you about the Moon and the Solar System;—"Damn the solar system! bad light — planets too distant — pestered with comets — feeble contriviance; — could make a better with great ease."
As quoted in "Romantic Parodies, 1797-1831" by David A. Kent, D. R. Ewen, in The Review of English Studies, New Series, Volume 44, No. 175, (1993), pp. 430-432. - Letter to Lord Jeffrey