The word 感情 is formed through the conceptual combination of its two component characters: 感, which originally pertains to sensory perception and feeling (like touch or impression), and 情, which signifies the inner state, condition, or genuine essence of the heart-mind. Together, they merge the idea of externally felt sensation with internal essence to create a holistic concept of human emotional attachment, encompassing both the feeling one receives from the world and the sincere affection one holds within. It represents a philosophical blend of reactive experience and profound, inherent sentiment.