because the methods of aesthetic research are diversified, (we can adopt the method of philosophical thinking, and we can also learn from the research methods of other related disciplines, such as the methods of experience description and psychological analysis, anthropology and sociology, linguistics and culturology, etc.), because the objects of beauty, that is, natural beauty, artistic beauty, social beauty, etc., are the results of subjective and objective research. The word aesthetics comes from the Greek word aisthetikos. The original meaning is "feeling to the senses". It was first used by the German philosopher Baum Jiatong. The publication of his book Aesthetics marks the emergence of aesthetics as an independent discipline.
The task of traditional aesthetics is to study the eternal and unchanging standard of artistic works as "beauty". The metaphysical aesthetics of German idealism was considered as the only standard aesthetics at that time. Under this condition, two branches developed: psychological aesthetics and aesthetics. Aesthetic (perceptual) cognition has been regarded as the opposite of rational cognition for a long time. This view has been replaced by a new modern view, that is, this opposite does not exist, and rational cognition is bound to be recognized through perceptual cognitive process. Even sharp logic can become a high aesthetic value at the same time.