The best speeches are delivered from a scant speech outline, or better yet from the heart. In fact, every time you practice the speech it should be slightly different. The following are 13 reasons why NOT to deliver a memorized, paper-written speech:
It creates a robotic memorized speech
It is easier to mess up
It creates written language instead of speech language
It is not natural
It is not passionate
It is not engaging
It is more work
It wastes paper
You lose flexibility in rearranging points
It is harder to involve the audience
It is harder to incorporate humour
What if someone asks a question?
Have you ever seen a TED Talker use paper?
How do you deliver a compelling speech without writing out every detail? First, know your topic inside and out; you should be the expert. Second, draft a speech outline. Third, practice, practice, practice from the outline.