The term aesthetics comes from the Greek word ‘αἰσθητικός’, which has the same roots as αισθησις (aisthesis). This last word means both sensory experience and feeling. In general the term aesthetics refers to the philosophical discussion about the essence of art / philosophy or the essence of beauty. It is more scientifically defined as the study of sensory or sensori-emotional values, sometimes called judgments of sentiment and taste.