Searching for Quote

I am racking my brain trying to remember/find a quote that I remember from a law school textbook.  Perhaps you can help.

It is a poem or other witticism that essentially says that a counselor’s best clients are those that fail to plan or forego paying for sound advice.  This poem has a general conclusion that clients pay their attorneys much more when they are not counseled ahead of time.

If you have any idea about the source of this quote, please let me know and I’ll pass along the information.