What does rationalism mean?
Rationalism is the view that reason should be the main basis for understanding truth, knowledge, and sound judgment. In philosophy, it is most closely associated with the claim that reason, rather than sensory experience alone, is the primary source and test of knowledge. Rationalists therefore tend to ask what can be established through careful reasoning, logical argument, or intellectual principles. The term can also describe a broader attitude that privileges evidence, consistency, and disciplined thought over emotion, intuition, custom, or unquestioned authority. Rationalism should not be confused with simple intelligence or good judgment: it identifies a distinctive philosophical and intellectual principle. Its history is closely connected with debates about the reliability of the senses, the existence of innate ideas, and the proper methods of explanation, making it a central concept in the history of Western philosophy.
nounRationalism is the philosophical position that reason is the primary source of knowledge and the standard for evaluating beliefs. In a broader sense, it refers to an approach that emphasizes logic, evidence, and rational thought rather than intuition, emotion, tradition, or authority.
- The philosophical view that reason is the principal source and test of knowledge, especially in contrast to empiricism.
- An approach or outlook that stresses clear thinking, logic, and reasoned judgment rather than emotion, intuition, tradition, or authority.
- A doctrine or tendency that attributes authority or truth to rational principles, especially in political, religious, or philosophical argument.
"The philosopher argued for rationalism as the most reliable guide to understanding the world."
"The lecture examined the historical influence of rationalism on modern philosophy."
"Her skepticism of the proposal was rooted in rationalism rather than personal dislike."
Plural is appropriate when referring to different systems or versions of rationalist thought.
"The book compares rationalisms that emerged in different intellectual traditions."
Rationalism asks a radical question: can reason alone lead us to knowledge?
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does rationalism come from?
The word comes from rationalism, derived from rational and related to Latin ratio, meaning reason or reasoning. It entered English in the late 17th century, initially associated with philosophical accounts that gave reason a central role in knowledge. The related rational and rationale continue to reflect the same Latin root, while rationalism developed into the name of a major philosophical position.
Related word forms
How rationalism is actually used
In philosophy, the term usually refers specifically to the view that reason is fundamental to knowledge. In general use, it can sound formal or academic and may suggest a preference for logic over emotional or intuitive considerations.
Easily confused with rationalism
Rationalism is a philosophical doctrine or method, whereas rationality is the quality of being reasonable or based on sound reasoning.
Rationalism gives priority to reason and innate or conceptual knowledge, while empiricism gives priority to experience and observation.