From Mass-Market Epiphany:
As society has become steadily more materialistic, Johnson declares, our churches have followed suit, giving up on the ascetic and ecstatic aspects of religion and emphasizing only the more worldly expressions of faith. Conservative believers fixate on the culture wars, religious liberals preach social justice, and neither leaves room for what should be a central focus of religion — the quest for the numinous, the pursuit of the unnamable, the tremor of bliss and the dark night of the soul.
By making mysticism more democratic, we’ve also made it more bourgeois, more comfortable, and more dilettantish. It’s become something we pursue as a complement to an upwardly mobile existence, rather than a radical alternative to the ladder of success. Going to yoga classes isn’t the same thing as becoming a yogi; spending a week in a retreat center doesn’t make me Thomas Merton or Thérèse of Lisieux. Our kind of mysticism is more likely to be a pleasant hobby than a transformative vocation.
What’s more, it’s possible that our horizons have become too broad, and that real spiritual breakthroughs require a kind of narrowing — the decision to pick a path and stick with it, rather than hopscotching around in search of a synthesis that “works for me.” The great mystics of the past were often committed to a particular tradition and community, and bound by the rules (and often the physical confines) of a specific religious institution. Without these kind of strictures and commitments, Johnson argues, mysticism drifts easily into a kind of solipsism: “Kabbalism apart from Torah-observance is playacting; Sufism disconnected from Shariah is vague theosophy; and Christian mysticism that finds no center in the Eucharist or the Passion of Christ drifts into a form of self-grooming.”
Johnson is a wonderful writer on religious thought, in case you've never encountered him before. His recent Commonweal article, Dry Bones, on which Douthat is commenting, is an excellent exploration of the role of mysticism, esoteric and exoteric aspects of religions.