His books include Losing Faith in Faith: From Preacher to Atheist.
He is also a musician and composer, and still receives royalties for religious songs he wrote when he was a believer.
"The next time believers tell you that 'separation of church and state' does not appear in our founding document, tell them to stop using the word 'trinity.' The word 'trinity' appears nowhere in the bible. Neither does Rapture, or Second Coming, or Original Sin. If they are still unfazed (or unphrased), by this, then add Omniscience, Omnipresence, Supernatural, Transcendence, Afterlife, Deity, Divinity, Theology, Monotheism, Missionary, Immaculate Conception, Christmas, Christianity, Evangelical, Fundamentalist, Methodist, Catholic, Pope, Cardinal, Catechism, Purgatory, Penance, Transubstantiation, Excommunication, Dogma, Chastity, Unpardonable Sin, Infallibility, Inerrancy, Incarnation, Epiphany, Sermon, Eucharist, the Lord's Prayer, Good Friday, Doubting Thomas, Advent, Sunday School, Dead Sea, Golden Rule, Moral, Morality, Ethics, Patriotism, Education, Atheism, Apostasy, Conservative (Liberal is in), Capital Punishment, Monogamy, Abortion, Pornography, Homosexual, Lesbian, Fairness, Logic, Republic, Democracy, Capitalism, Funeral, Decalogue, or Bible."
- — Losing Faith in Faith
- Losing Faith in Faith: From Preacher to Atheist, 1992 (ISBN ISBN 1-877733-07-5)
- Maybe Right, Maybe Wrong: A Guide for Young Thinkers, 1992 (ISBN 978-0879757311)
- Maybe Yes, Maybe No: A Guide for Young Skeptics, (ISBN 978-0879756079)
Dan's Biography on the Freedom From Religion Foundation website.