Irrationalism is a philosophical movement that emerged in the early 19th century,[2] emphasizing the non-rational dimension of human life. As they reject logic, irrationalists argue that instinct and feelings are superior to reason in the research of knowledge.[3][4][5] The term has often been used as a pejorative designation of criticisms against rationalism as a whole.[6]
The philosophy of rationalism, understood as having first emerged in the writings of Francis Bacon and René Descartes, has received a variety of criticisms since its inception.[2] These may entail a view that certain things are beyond rational understanding, that total rationality is insufficient or even harmful to human life, or that people are not instinctively rational and progressive.[6][5]