In his Spiritual Exercises, St. Ignatius of Loyola set down eighteen rules for “thinking with the Church” that are fundamental to the discernment of spirits. The Latin phrase sentire cum Ecclesia, “to think with the Church,” succinctly identifies the truly Catholic state of mind. Christ and His Church possess “the same Spirit which governs and directs us for the salvation of our souls.” The Catholic possesses the mind of Christ when he or she thinks with the Church.
—from the blog post Thinking With the Church – Mysticism and Magisterium, Part I of VI by Fr. Angelo Geiger posted at Spiritual Direction