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Either one is okay. The second one is more emphatic, and I would only put it on a new line if there was a whole speech (that is, not for one sentence). But there's nothing wrong with the punctuatio...
Answer
#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/25636 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/25636 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/