And what are these fluxions? May we not call them the ghosts of departed quantities?
Philosophers
George Berkeley
Anglo-Irish bishop and philosopher (1685-1753) whose dictum "to be is to be perceived" launched modern subjective idealism. With Locke and Hume he forms the British empiricist trio. Berkeley, California bears his name.
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Source: バークリー『アナリスト (The Analyst)』 §35 (1734年)Verified