I just wonder... can you take a patent on a saying?

"Is sayings patentable?"
I tried to patent the saying, "Is our children learning?" and found out that patents are not for phrases or sayings but for inventions of actual "things" and for methods of making or using those invented things.
A long enough "saying" or phrase that is original and that you yourself create and write down might be protected under copyright law.
Also, a "saying" or phrase that is used in connection with selling products/services can be protected under trademark law.