Choose something that:
-Elicits feeling (answer, determination, excitement, frustration).
-You consider worth sharing.
-You disagree with or you agree with.
-You feel is wrong information.
-Is said in an unusual, catchy way.
-Is important for other people to know.
-You would like to talk or write about.
-Reminds you of a similar situation
Remember: Selecting a quotation does not mean finding a sentence with quotation marks. It means finding a full sentence or part of a sentence--with or without quotation marks-- that you copy word for word and attribute to the original writer.
-Taken from "Step Up To Writing"