Mystics are path-breaking religious practitioners who claim to have experience the infinite, word-defying Mystery that is God. Many have been gifted writers with an uncanny ability to communicate the great realities of life with both a theologian's precision and a poet's lyricism. They use words to jolt us into recognizing ineffable mysteries surging beneath the surface of our lives and within the depths of our hearts and, by their artistry, can awaken us to see and savor fugitive glimpses of a God-drenched world.

In Mystics, William Harmless, S.J., introduces readers to the...