You see, Hylas, the water of the fountain over there, how it is forced upwards in a round column to a certain height, at which it breaks and falss back into the basin from which it rose, its ascent as well as descent proceeding from the same uniform law or principle of gravitation. Just so, the same principles which, at first view, lead to skepticism, pursued to a certain point, bring men back to common sense.

George Berkeley, Three Dialogues Between Hylas and Philonous,Third Dialogue

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