Noun
irrationalism (countable and uncountable, plural irrationalisms)
A philosophical movement formed as a cultural reaction against positivism in the early 20th century.
If there is any consistent enemy of science, it is not religion, but irrationalism. Stephen Jay Gould
Political irrationalism which infests, deforms and destroys our lives, is - in the strictly psychiatric sense - a perversion of social life, caused by the ostracizing of the natural life functions and by their exclusion from the determination of social life. Wilhelm Reich
It is the Soft Porn of Irrationalism. Ernest Gellner