If triangles had a god, he would have three sides.

The aphorism satirizes anthropomorphism: the tendency to imagine God (or ultimate reality) in the image of the believer. By positing “triangles” as worshippers, it suggests that any being would project its own nature onto the divine—triangles would conceive a three-sided god. The point generalizes to human religion and philosophy: our descriptions of God may reveal more about human psychology, culture, and limitations than about any transcendent reality. The line is often used in critiques of theological certainty and in arguments for epistemic humility, implying that conceptions of the divine are conditioned by the conceptual “shape” of the conceiver.