noun
Refers to the faculty of reasoning and understanding, often contrasted with emotion or instinct.
理知だけでは人の心は動かせない。
Intellect alone cannot move people's hearts.
彼は理知に優れた人物だ。
He is a person of superior intellect.
Compound of 理 (reason, logic) and 知 (knowledge, wisdom). The exact historical derivation is uncertain, but the combination naturally yields the meaning of intellect or intelligence.