In each sentence below, one set of letters has been substituted for another. The words are in the correct order, with a space after each and correct punctuation. Each sentence has its own code. Can you figure out the substitutions and find the original sentences?

-1. G DLSVLAK OMPPLS RGZ WO HULQ KUL OMQ WO OUWQWQJ, KUL YSLLFL WO YEXHWQJ, KUL YWSRO GSL OWQJWQJ, GQR KUL EGHQ PXHLS WO YSXILQ. -BGPLO RLQK

-2. T YH NWUO TK TN Y ZUOYK HTNKYMO YGEYPN KA MIAE OIAWZL KA ZA TI ELOI TK UYTIN. AIO HYP MOOF NIWZ YIX XUP JP NWQL MIAEGOXZO, JWK AIO HTNNON Y EAUGX AR GABOGTIONN. -YXOGTIO MIYFF

3. MCUFU VK JVMMJU GCYPGU MCYM BUMUDFDJDHVKMK GYP KDJAU MCU BOKMUFVUK DT RUYMCUF QPMVJ MCUO HYVP YP QPZUFKMYPZVPH DT MCU BQMQYJ YMMFYGMVDP DT FYVP YPZ RUUSUPZK. -YFPDM KCULLYFZ

-4. KET KIGPVAT NSKE NTWKETI BGITOWRKSZL SR KEWK SK'R ISLEK KGG GBKTZ BGI PR KG SLZGIT SK WZY NIGZL KGG GBKTZ BGI PR KG ITAH GZ SK. -JWKISOM HGPZL

-5. SWQ'B CQWEC BNF GFMBNFZ; QYQF-BFQBNP WU BNF LFWLIF EWHISQ'B PBMZB M EWQXFZPMBYWQ YU YB SYSQ'B ENMQTF WQEF YQ M GNYIF. -CYQ NHOOMZS

5. Don't knock the weather; nine-tenths of the people couldn't start a conversation if it didn't change once in a while. Kin Hubbard

4. The trouble with weather forecasting is that it's right too often for us to ignore it and wrong too often for us to rely on it. - Patrick Young

Good solves!

2. I am sure it is a great mistake always to know enough to go in when it rains. One may keep snug and dry by such knowledge, but one misses a world of loveliness. -Adeline Knapp

Well done, Sondi.

1. A perfect summer day is when the sun is shining, the breeze is blowing, the birds are singing, and the lawn mower is broken. James Dent

Good job, manxman!