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Bookstore Customer Support

Toll Free: 800.833.3645  -  Phone: 707.878.9100  - Fax:707.878.9111

Hours of Operation:  9 a.m. - 4 p.m. Pacific Standard Time
Days of Operation: Monday through Friday, except major holidays.

If your questions are not answered below or on our shipping policy page, or if you have a question related to a specific order, you may contact


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The Foundation for Critical Thinking takes your privacy seriously. No personal information gathered from this site — whether sales or membership — will be resold or shared with another party without your express and prior consent. Any information gathered through this website is used for internal purposes to assist us in providing a better resources and learning opportunities for the Critical Thinking Community.  You may elect to receive information via email or postal mail from time to time regarding Critical Thinking Conferences, publications, online services, and events.

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Our website shopping cart is encrypted using an SSL secure certificate. Personal and financial information sent through our ecommerce system is encrypted using this certificate. Your full credit card number is not stored in our new shopping cart.