But do you notice that as the bow of the ship sinks and rises, all the
stars to the southward seem to dance up and down?
Now I understand. Like as these stars appear to dance about according
to the motion of the ship, so the apparent motion of the stars round
the earth in twenty-four hours must be owing to the motion of the
earth. The earth must turn over once a day. It is easier to imagine
this, than to imagine such extraordinary motions to take place among
the stars.”