Among all the great men who have philosophized about this remarkable effect, I am more astonished at Kepler than at any other. Despite his open and acute mind, and though he has at his fingertips the motions attributed to the earth, he nevertheless lent his ear and his assent to the moon's dominion over the waters, to occult properties, and to such puerilities.

In regard to Kepler's belief of the moon affecting the tides of the Earth, p. 328 - Dialogue Concerning the Two Chief World Systems (1632)