"I will propose an ingenious fancy. ...the unknown problem of the tides might receive some light, admitting of the Earth's motion. ...I have thought good to lay down those probabilities that would render it credible, admitting that the Earth did move."
January 1, 1970
https://en.wikiquote.org/wiki/The_Systeme_of_the_World%3A_in_Four_Dialogues