Deliver your speech appropriately

Consider the occasion.
Reading from a manuscript is most appropriate for solemn occasions, for example, while speaking extemporaneously fits best with political rallies.

Consider the topic.
Some topics could be naturally boring, but having more fluidity, like speaking from notes rather than reading an entire manuscript, could help make them more interesting to the audience.

Consider your audience.
The audience at a stage play, for example, would be turned off if the actors read from scripts. In this case, committing speech and delivering from memory would be most appropriate.

Mix up the methods.
Consider joining two or more delivery methods together. Some speakers may choose to read the most important parts of their speeches from manuscripts and utter the rest extemporaneously. Others may write and commit a few important parts of their address — the introduction, conclusion, some vital arguments, and illustrations — to memory, and depend on the “inspiration of the hour” for the language of the rest.