I’m at a water conference, where one presenter hit us with the Mark Twain quote:

“Whiskey is for drinking; water is for fighting over.”

However, as Twainquotes.com says:

This quote has been attributed to Mark Twain, but until the attribution can be verified, the quote should not be regarded as authentic.

Obviously, if Twain did not say it, he should have. I remember reading that he found coming up with such sayings very difficult and time-consuming, because making them clear and concise is a lot of work.