Here are 3 different sayings encoded using the same code:
ZMQX YMFE YCNE WCYY UE BKVVZ KRL BKXDMRCMQO.
HBEXE CO KYWKZO MRE HBCRS HM XEDEDUEX: WXCHEXO KXE KYWKZO OEYYCRS OMDEUMLZ MQH.
-- TMKR LCLCMR, "OYMQGBCRS HMWKXLO UEHBYEBED"
ZMQX KCDO KXE BCSB, KRL ZMQ KXE GKVKUYE MN DQGB.
I give up!