One of my characters is quoting HP Lovecraft in a conversation. I am looking for the term he sometimes use to describe symmetries in which sometimes the angles of a triangle adds up to more or less than 180 degrees. suposedly contemplating those symmetries drive a person out of his or her mind.
I simply cannot remember the term or which story I read it in. I googled it half to death and looked through my hp lovecraft collection but there is too much of it... in my desperation I turn here. hopefully someone can help me.