Is it OK to add here quotes by famous people of historical significance?
Like this one: "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety."
By Benjamin Franklin.
We have some historic sentences already. I think including them is fine, especially if tagged, as you suggest, with the author name. One suggestion: since modern English no longer capitalizes nouns mid-sentence, it would be best to lowercase these to conform with modern usage. (German will of course continue to follow its own rules.)