Franz Brentano 1 was an important philosopher, but for a long time his importance was under-estimated. At least in the English speaking countries, he came to be remembered best as the initiator of a philoso phical position which he in fact abandoned for good and sufficient 2 reasons. His ultimate and most important contributions passed almost unnoticed. Even such a well-informed and well-prepared book as Passmore's IOO Years 01 Philosophy (Duckworth, 1957), is open to the same comment; Passmore concentrated his attention on the early Brentano, because he regarded his influence on the British...