A decent interval has elapsed since the publication, in Religious Studies, Vol. 11 (1975), pp. 167–79, of Professor R. C. Zaehner's article: ‘Why Not Islam?’ The question, an intriguing one, was answered there with such ambivalence that a cynic might be forgiven for thinking he was being trifled with, while a well-wisher could easily be lost in confusion. The Professor commended Islam from the angle least worthy to command credence or to merit acceptance. His case for Islam had about it an air of almost perverse pleading, identifying Islam's main asset as an authoritarian simplicity suited to simple minds. The writer appeared to be withholding his own position by the very form of his advocacy. The article could equally be read as a subtle dissuasive. ’Sadly, debate cannot now be joined. For the piece must have been among the very last the author published. Death, as with Dickens and the mystery of Edwin Drood, silences inquiry about the puzzle of his intentions. It would be unseemly to have pressed the issues too sharply or too soon. But, at this distance of time, it may be possible to wonder in print about what Professor Zaehner's purpose really was. ’Why not…?’ is a question which it is always well for us to ask about alternatives within the human, or the religious, scene. Negative questions, as the Latin grammarians have it, expect the answer Yes. ’Why not X,’ however, when it comes to grips, has to pass into reasons why in the affirmative. It is in doing so that Zaehner offers what, on many counts, would seem to be dubious, even un-Islamic, reasons for his pleas.