noun
intellectualist
A person who values intellect and reason above emotion or practical concerns; often used in philosophical or cultural contexts.
彼は主知主義者で、感情よりも論理を重視する。
He is an intellectualist who values logic over emotion.
主知主義 is the abstract doctrine of intellectualism, while 主知主義者 refers to a person who adheres to it.
Compound of 主知 (shuchi, 'intellect-centered') + 主義 (shugi, '-ism') + 者 (sha, 'person'). The term is a calque from Western philosophical vocabulary.