This quotation puzzle -- AKA anacrostic, acrostic, etc. -- provides a great way to inject one of Shakespeare's most memorable passages into the minds of your students (Out, out, brief candle...) in a painless, highly cognitive way. Pass them out, explain how to solve it, give them a few freebies, and you'll have a quiet classroom for the rest of the period ... guaranteed. You really need to try it and see.