Religion is a spiritual matter that begins in personal experience. For some Christians, this means that one should not cognitively question the nature of the experience or the way the experience is expressed. Presbyterians disagree, affirming that God created the mind. We believe that Christians have the right and obligation to use their minds in the search for spiritual truth and meaning.
From John Calvin forward, many of the greatest Christian thinkers have been Presbyterian and/or part of the Reformed tradition. These include the early American theologian, Jonathan Edwards, and the 20th Century giant, Karl Barth, who was probably the greatest theologian of our time. (Barth was a pastor in the Swiss Reformed Church.)
The affirmation of the life of the mind explains why Presbyterians spend so much time writing creeds, statements of faith (called confessions), and the theological works. This affirmation of intellect affects how we view faith. Presbyterians affirm that faith is a way of feeling—but we affirm clearly and consistently that faith is also a way of knowing.
Presbyterians recognize, however, that no one statement of faith will ever encompass the whole of the Christian experience. This is one reason why we are often found looking for new formulations of words and ideas. We are interested in expressing what we know and believe in our own time and in our own words.