There was a great movie with Robert Redford where someone invented a device to break all codes. As kids we used to make up a code and write a message, then have the others decode the message. There are some standard rules that are very useful in breaking simple codes. I have a normal sentence encoded for you to break. The first one to break the code wins. I won't confirm the answer until everyone guesses or decodes the message the same. Get your pen and paper ready. Here's the coded message:
Sbe gur Oybt bs Jbeq Wbhfg, gur uneqrfg guvat gb qb vf gb pbzr hc jvgu gur arkg tnzr.