You can lead a horse to water, but if you can get him to float on his back, you've got something.

More from Hartley's First Law

• The first myth of management is that it exists.
• There are those who make things happen; those who watch things happen; and those who don't know what the heck happened.
• There are two kinds of people in the world, those who believe there are two kinds of people in the world and those who don't.