Answer:
You could compare a handsome gentleman to a book because they both hold the characteristics of being:
- Mysterious- you cannot judge books nor man by their cover. Underneath their "cover" they can be an array of things. Perhaps you wanted a Dystopian novel but you got some humor along with it. Perhaps you wanted a man with confidence, but you got charisma instead with a soft interior. They are similar.
- Well Mannered- Books are cultured, they hold knowledge and present information from an intreresting perspective. So do gentlemen, they are cultured and hold information.
- Effective at Communicating- Books are known for their words. They are able to communicate their message. So can men, if you are a gentleman you are supposed to be good with words- silver-tongued some may say.
Anyway, I hope that helped even though it wasn't put together well. Have a good day!