"God gave us a mind in order that we might learn and receive help from him, not in order that the mind should be self-sufficient. Eyes are beautiful and useful, but if they choose to see without light, their beauty is useless and may even be harmful. Likewise, if my soul chooses to see without the Spirit, it becomes a danger to itself."
St. John Chrysostom,
Homilies on the Epistles of Paul to the Corinthians, 7.9