Sole Authority
<p><b>Thomas Aquinas: God's divine law is for believers; it is revealed in Scripture (</b><i>see</i> <a href="http://www.crossbooks.com/book.asp?pub=0&book=2697&sec=00010512#RevelationSpecial">Revelation, Special</a>). Although written by humans with differing literary styles (<i>Summa Theologica,</i> 2a2ae. 173,3,ad1), t<b>he Bible is the only divinely authoritative writing (ibid., 1a.1, 2, ad2). The Bible is inspired and inerrant (</b><i><b>see</b></i><b> </b><a href="http://www.crossbooks.com/book.asp?pub=0&book=2697&sec=00001370#BibleEvidencefor"><b>Bible, Inspiration of</b></a><b>), even in matters that are not essential to redemption (ibid., 1a.1, 10, ad3). No other Christian writing, neither the Fathers nor the creeds, are inspired or revelatory. They are only human interpretations of God's revelation in Scripture (ibid., 2a2ae. 1, 9).</b>
Baker Encyclopedia of Christian Apologetics.</p>