Decrypt the message below by hand and show your work. Note: this is a substitution cipher. There is no pattern; instead, each letter is actually another.

N INLZKI RNI FPGMZMT ZLF OKKCF, NIS TMTI LVT NHJZLZKPF. JPL ZL RNIIKL FPGMZMT LGTNFKI OGKH QZLVZI. NI TITHX NL LVT WNLTF ZF CTFF OKGHZSNJCT, OKG VT ZF BIKQI NIS RNGGZTF VZF JNIITG KDTICX. JPL LVT LGNZLKG HKMTF NHKIWFL LVKFT QZLVZI LVT WNLT OGTTCX, VZF QVZFDTGF GPFLCZIW LVGKPWV NCC LVT NCCTXF, VTNGS ZI LVT MTGX VNCCF KO WKMTGIHTIL ZLFTCO. OKG LVT LGNZLKG NDDTNGF IKL N LGNZLKG; VT FDTNBF ZI NRRTILF ONHZCZNG LK VZF MZRLZHF, NIS VT QTNGF LVTZG ONRT NIS LVTZG NGWPHTILF, VT NDDTNCF LK LVT JNFTITFF LVNL CZTF STTD ZI LVT VTNGLF KO NCC HTI. VT GKLF LVT FKPC KO N INLZKI, VT QKGBF FTRGTLCX NIS PIBIKQI ZI LVT IZWVL LK PISTGHZIT LVT DZCCNGF KO LVT RZLX, VT ZIOTRLF LVT JKSX DKCZLZR FK LVNL ZL RNI IK CKIWTG GTFZFL. N HPGSTGTG ZF CTFF LK OTNG. -HNGRPF LPCCZPF RZRTGK