Yiftach Fehige
Philosopher and Theologian

Welcome! I am a Canadian-German philosopher and theologian, and greatly appreciate the opportunity to share with you my scholarship. Most of my work falls within the field of science and religion.

I focus on the faith traditions of Christianity and Judaism, and I am mostly interested in philosophical and theological matters, both in historical and systematic perspective, as they relate to modern science.

What has been attracting my scholarly interest the most are central issues related to three intriguing topics. They are: (1) the cognitive efficacy of thought experiments; (2) sexual diversity; (3) the relationship between Christianity and Judaism. My views on the core issue of each topic are, in a nutshell: (1) thought experiments have an indispensable cognitive function by means of intuitions. (2) human sexuality requires a non-binary framework to make sense of it. (3) a genuine dialogue between Christianity and Judaism is possible, but not yet reality.

In 2018 I have begun work on a new project that looks into the topic of pluralism in philosophy of science, and this is done with an eye on discussions of religious pluralism. While there has been a “pluralistic turn” in philosophy of science, most discussions in the field of science and religion still centre on scientific monism, especially when it comes to the treatment of religious diversity.

I received most of my academic training in Germany. In 2001 I immigrated to Israel. Since 2006 the University of Toronto has been my academic home. I hold tenure at the rank of Associate Professor.


Institute for the History and Philosophy of Science and Technology (IHPST)

Room: VC320

University of Toronto

91 Charles Street West

Toronto, Ontario  M5S 1K7


yiftach [dot] fehige [at] utoronto [dot] ca

ph: 1-416-946-5024

Follow me on twitter:

Twitter: @FehigeToronto

Much of my work reflects a great appreciation of thought experiments. The image above shows Niels Bohr’s depiction of the modifications that he introduced to counter a scenario features in a thought experiment that Einstein had proposed to look into the tenability of Heisenberg’s Uncertainty Principle. The image below is Bohr’s drawing of the scenario that Einstein initially proposed.

See Niels Bohr. 1949. “Discussions with Einstein on Epistemological Problems in Atomic Physics.” In: Albert Einstein: Philosopher-Scientist, Menasha: George Banta Publishing Company.