Can we try a quote from my mom:
"We always cried going away to summer camp..."

And the basics:
'You can lead a horse to water, but you can't make him drink'
'What Peter says about Paul says more about Peter than it does Paul'
'Do unto others as you would have them do unto you'
'Don't judge a book by it's cover'

This is all I can think of for now... I have so many others on the tip of my tounge, but I can't recall them! Hope this is good enough.