Quoting a character outside of speech
So I have just hit this little stumbling block and would like the wider world's opinion... here is an example -
Jim had a simple rule, always remember your boots.
How would you write this?
Some people say it should be - Jim had a simple rule, 'Always remember your boots.'
Others say - Jim had a simple rule; Always remember your boots.
Jusy curious if there is a right way?