In Kline v. Burke Construction (1922)

In Kline v. Burke Construction (1922), it states that “only the jurisdiction of the Supreme Court is derived directly from the Constitution.” But then, 28 U.S.C. §1257 is the statute authorizing the Supreme Court’s jurisdiction over appeals from state courts.
Question: If the Supreme Court’s jurisdiction is derived directly from the Constitution, why do we have to look to a statute (28 U.S.C. §1257) to determine that jurisdiction? Please explain.