One of the greatest challenges facing civilization in the twenty-first century is for human beings to learn to speak about their deepest personal concerns-about ethics, spiritual experience, and the inevitability of human suffering-in ways that are not flagrantly irrational. We desperately need a public discourse that encourages critical thinking and intellectual honesty. Nothing stands in the way of this project more that the respect we accord religious faith.

Spiritual life can certainly follow the pattern one sees in the fake martial arts, with most teachers making nebulous and magical claims that never get tested, while their students derange themselves with weird ideas, empty rituals, and other affectations.

Rather than bring the full force of our creativity and rationality to bear on the problems of ethics, social cohesion, and even spiritual experience, moderates merely ask that we relax our standard of adherence to ancient superstitions and taboos, while otherwise maintaining a belief system that was passed down to us from men and women whose lives were simply ravaged by their basic ignorance about the world.

A kernel of truth lurks at the heart of religion, because spiritual experience, ethical behavior, and strong communities are essential for human happiness. And yet our religious traditions are intellectually defunct and politically ruinous. While spiritual experience is clearly a natural propensity of the human mind, we need not believe anything on insufficient evidence to actualize it.

Many of my fellow atheists consider all talk of 'spirituality' or 'mysticism' to be synonymous with mental illness, conscious fraud, or self-deception. I have argued elsewhere that this is a problem - because millions of people have had experiences for which 'spiritual' and 'mystical' seem the only terms available.

A true spiritual practitioner is someone who has discovered that it is possible to be at ease in the world for no reason, if only for a few moments at a time, and that such ease is synonymous with transcending the apparent boundaries of the self.