Notice something here... the first two have quotation marks around them because they're text.
But the last two don't have quotes... because those are numbers. Lua can print numbers directly without quotes.
And that last one... print(5 + 3)... Lua will actually calculate that for you and print the result, which is 8.
Go ahead and run it... and you'll see all four lines show up in the Output, one after another."