Steven Rieber´s excellent entry for "Grice" for the "Companion to the Philosophers", pp. 268ff.

by JLS
for the GC

available via google.books. at

http://books.google.com.ar/books?id=lQX55W2_1-IC&pg=PA269&lpg=PA269&dq=%22ethical+theory%22+Grice+implicature&source=bl&ots=NI4BiVCfty&sig=V2Wqo5MB0fsTgrMsWF2OlKnend8&hl=es&ei=kH3sS72uBIbGlQeCzPWzCA&sa=X&oi=book_result&ct=result&resnum=3&ved=0CBUQ6AEwAg#v=onepage&q=%22ethical%20theory%22%20Grice%20implicature&f=false

The entry starts on p. 288.

Isn´t Reibel being genial when he writes "virtually"?

"The theory of conversational implicature developed by
Grice has been employed in virtually every area
of analytic philosophy." -- and beyond!

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Reibel goes on to mention Grice´s "ethical theory" as being "subtle and intricate", as it should!

And to note that while implicature is virtually employed everywhere Grice first conceived indeed to apply to the problem of sense data vis a vis Wittgensteinian objections.