Justice Waite continued: "Some authorities go further and include as citizens children born within the jurisdiction without reference to the citizenship of their parents. As to this class there have been doubts, but never as to the first. For the purposes of this case it is not necessary to solve these doubts."
So Justice Waite is saying that everyone agrees that children born in the U.S. of citizen parents are natural-born citizens. He is also saying that some also believe that children born in the U.S. are natural born citizens regardless of the citizenship of the parents. And he also makes it clear that for the purposes of the case at hand it is not necessary to say whether or not these people are correct. And so Justice Waite doesn't.
But you knew that too.
Not the point n00b, play your games with some one else.