There are many slogans such as "Give me liberty or give me death!" or "United we stand, divided we fall" you just have to look up some and presto there you have tons and tons of slogans! Also, theres...
Well American loyalists were loyal to the British King and demanded that the patriots stayed with the colony so I think that these two are good- Treason isn't Pleasin'- Be loyal to the royal- Please...
To improve upon the original post of "Vegetarians are more brainy than non vegetarians." I've added the following.
There's always the classic: "Meat is Murder!" (see The Smiths)
Go Veg!
-Love...