- When you have a quotation within a quotation, e.g., Bob said "Rita was yelling 'I hate you.'"  This rule applies in American English. Interestingly, the Australians and the British usually reverse this, putting the double quotes on the quotation within a quotation and the single quotes around the quotation itself.
- The Associated Press and other...
Smart = sort of a basic, casual compliment about someone's intelligence.
Intelligent = more formal than smart, and perhaps more of a compliment than smart.
Clever = showing ingenuity, resourceful, able to make the best of a situation.... (more)
- People say this after realizing they said something obvious. It's sort of a way to admit "Gee I just said something that didn't need to be said." For example if someone says "What do you see in her?" someone might respond "She's really smart, but that goes without saying. What I really appreciate is her kindness and subtle sense of humor."
- People say this ...