Worlds of Speculative Fiction

Dr. Sadler's monthly talk series on narrative worlds and philosophical themes of speculative fiction, available worldwide

Your Instructor


Gregory B. Sadler
Gregory B. Sadler

After a successful career as a college professor, researcher, and administrator, I started our company, ReasonIO (with my wife and partner, Andi Sciacca) in order to help people study and apply philosophy in public, practical, and professional contexts. I continue teaching philosophy, literature, religious studies, and humanities courses at the Milwaukee Institute of Art and Design.

I take difficult philosophical texts, thinkers, and topics, and make them accessible for everyday people. That's how philosophy gets traction and remains closely connected with real life! The work I do with ReasonIO includes online course development and teaching, public speaking, organizational and ethics consulting, tutorial sessions, development of philosophy content, and philosophical counseling.

My work and expertise covers a wide range of topics, thinkers, and texts in western philosophy, ranging through ancient, medieval, modern, and late modern periods. Among the schools, movements, and traditions I draw upon are Platonism, Aristotelianism, Stoicism, Patristic and Medieval Christian thought, Dialectical thought, Existentialism, Critical Theory, and Philosophy as a Way of Life.

From 2016 to 2022, I served as the Editor of Stoicism Today. I remain a member of the Modern Stoicism, ltd. team. I am also the producer of the Half Hour Hegel series, which is nearing its completion. I have authored one book (Reason Fulfilled By Revelation), edited two volumes (Stoicism Today Selected Essays, volume 3 and volume 4), and published dozens of articles, book chapters, and encyclopedia entries. Although I work in significant part outside of the academy, I remain actively engaged in research and scholarship.

In recent years, I have held a Research Residency at the Institute for Saint Anselm Studies, been a Visiting Scholar position at European Graduate School, and was a Charles Chesnutt Library Fellow. I am also an APPA-certified Philosophical Counselor.


Course Curriculum



Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
How does lifetime access sound? After enrolling, you have unlimited access to this course for as long as you like - across any and all devices you own.
Do I need to read all of the books discussed before I take this course?
No - you can read whatever works you want by the authors we are covering. You will likely get more out of the course if you do read some of the texts discussed.
What if I am unhappy with the course?
We would never want you to be unhappy! You can always unenroll from the course whenever you decide.

Get started now!