An interesting sentence, which I found on an old blog entry of Professor John Wells’s:
Who would know aught of art must act, learn and then take his ease.
If it is read with an RP accent, using strong forms for would of must and the weak form for and, it supposedly not only uses all monophthongs and narrow diphthongs but does so in a regular order: roughly, going clockwise around the periphery of the IPA vowel diagram.
(For the remaining diphthongs, one could add something along the lines of
My loud voice nears their moors.)