Cryptoquote XIV
This challenge contains a cryptoquote puzzle.
In this quotation, one letter has been substituted for another. Can you break the code? The text area is for you to work out the solution. Augustus Caesar said it on his deathbed (Suetonius, De Vita Caesarum, Book II, 99.) Clue: A = G

BX B ODRM SEDGMP IG SDYU CMEE, GEDS GZKY ODWPN DWP PBNIBNN IM
CBUO DSSEDKNM XYZI UOM NUDAM.

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