"We hold these truths to be self-evident, that all men are created equal, and that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty, and the pursuit of Happiness."
The actual quote is:
"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."
The difference is that the phrase "the pursuit of Happiness" is not separated by a comma in the original Declaration of Independence.