Quote by Steven Wright
My grandfather invented Cliff's Notes. It all started back in 1912...Well, to make a long story short...

Summary
The quote suggests that the speaker's grandfather invented Cliff's Notes, a series of study guides. However, instead of providing a detailed explanation about the invention, the speaker chooses to simplify the story by saying, "to make a long story short." This implies that the speaker will not delve into the extensive details and history of the invention but wants to provide a concise explanation or summary.