Don't Memorize - They tell people... memorize and then work on it. I don't know why people teach this way... the problem with that is you will get into a pattern of how you are going to say it... as an actor you need to be fluid and be able to take direction. You don't want to be stuck in the way you are doing it because you already developed the pattern.
Here is a sneak peak.... full video on www.theactorstoolbox.net
Episode 3 of a 7 part Docuseries on Overcoming Audition Fears