Irrationalism is a philosophical movement that emerged in the early 19th century, emphasizing the non-rational dimension of human life. As they reject logic, irrationalists argue that instinct and feelings are superior to the reason in the research of knowledge. The term has often been used as a pejorative designation of criticisms against rationalism as a whole.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. These may entail a view that certain things are beyond rational understanding, that total rationality is insufficient to human life, or that people are not instinctively rational and progressive. Source: Wikipedia (en)