This chapter argues that theological thinking should be considered as intrinsic to the activity of proclamation and as a form of speculation called forth as part of God’s salvific economy. God’s Word not only became flesh and revealed the Father, but Christ and his Spirit also act in his body, the Church, to reform and elevate human reason, to shape our understanding and celebration of revelation. This is so, even as theological thinking is also a human activity that may go astray. Theological thinking contains at its heart a dynamic relationship between attentive interpretation to Scripture and attention to the radical newness brought about by the continuing activity of Christ and the Spirit in the world. At the same time, in attention to the Church’s tradition, the theologian finds a school for the speculative imagination. The final section focuses on the unity and diversity of different theological acts and subdisciplines.