Booking Dr. Carrier

Unfortunately due to the increasing demands of work and income I can no longer speak for free. For any speaking engagement I usually require travel & lodging, a $300 honorarium, and an opportunity to sell my books at your event. If you want to do a teleconference, I charge only $150 (per hour), and no expenses. I also teach regular courses online for considerably less, though not live.

But here are some additional options and things to know...

•  The largest expense is always transportation.

I live in California, an hour or two drive from the Sacramento, Oakland, San Jose, and San Francisco airports (and that's in order of proximity to me). Often the lowest expense is lodging. I prefer a nonsmoking room at any reasonable establishment. But if you can find volunteers to take me in, all I need is a warm bed and a hot shower. Be aware that I do sometimes travel with a girlfriend (though that requires no additional expense, it should be acceptable to anyone hosting me). If instead of flying you would like me to drive to you in my own car, I am happy to, but depending on circumstances I may have to charge 50 cents a mile (counting the distance only once, not round-trip). For any engagement (virtual or actual) I am also often unavailable, as my calendar fills quickly, so arrangements should be made at least three months in advance, and preferably six months or more. Contact me for negotiating a date and other essentials. You can also check my Events Calendar for availability.

•  How you can get me for less money.

If you team up several organizations for a single joint event, or more, even over multiple nearby cities, you can reduce my fee and split costs as well. I am willing to stay several days for multiple events. You will have to board me for those extra nights, but you might also be able to split the airfare. Additionally, if I book more than one event in the same tour area my honorarium drops to $200 per event (instead of $300 for a single event). Informal events are always free (e.g. dinner parties, meet-and-greets, etc., where I don't have to give a formal speech or organize a workshop, etc.; ideal for fundraisers and membership drives). Just feed me copious amounts of alcohol. To give you an idea of how this can work, I once spoke at a university, the costs of which were split three ways by the campus freethought group and two different academic departments that were interested in the subject of my talk. On another occasion I spoke to two separate atheist community groups in cities near each other on different but proximate days, a volunteer driving me between them, and the two groups split my airfare and enjoyed my discounted honorarium. So feel free to be creative. My time is flexible.

•  Values clause.

I will not speak at events run by organizations hostile to my values. I must feel comfortable that you agree with promoting reasonableness, compassion, and integrity, and opposing sexism, racism, homophobia, and transphobia.

•  If you've already booked me.

If you've already booked me for an event and just need bios or photos see my Publicity page. If I have confirmed for the event, you have permission to use those materials however needed.

•  What topics I can speak on.

If you do want to book me, please tell me what topics you want me to speak on. Find out what your group or audience is most keen to hear. I've delivered many public speeches to religious and freethought groups around the country since 1998.

I lecture on critical thinking, historical method, the philosophy of naturalism, the intersection of humanism and feminism or polyamory, and ancient history, especially ancient science, technology, and religion, and the origins of Christianity.

For an idea of where I've spoken recently (or soon will), and on what subjects, see my blog [old and new] and my books. For other ideas browse my whole website. For video and audio recordings of some of my past events see my A/V Page.

But the following topics are my forte:


  • Ancient Roman science, technology, philosophy, and religion
  • The philosophy of naturalism and the importance of naturalism as a worldview
  • My experience with feminism, polyamory, or other social justice causes
  • Historical method and what makes for a good historian
  • Arguments for and against the resurrection of Jesus or the existence of God
  • Christian apologetics and the skills and tactics of debate

  • Specific:

  • The origins of Christianity
  • The origins of science
  • The historicity of Jesus (my books on the subject)
  • Hitler's religious beliefs (my research for GSR)
  • The value of philosophy
  • Critical thinking and/or Bayes' Theorem

I'm also willing to participate in formal debates. See my Debate Requirements page. You may also hire me for writing, consultation, teaching or research, but for that I'm expensive and rarely available.

If you want to discuss booking me for any event or assignment please contact me by phone or text, especially if urgent. Although I prefer to communicate by email several months in advance.

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