He is considered art any original human creation through shapes, images, sounds, words... that they express the realities of the world outside or inside in a beautiful way associated with complex emotional experiences, in short, an artistic expression is a manifestation of beauty. The beauty as the truth, the good that the scholastic philosophers transcendental properties of being considered, have had two historical approaches: the objective and the subjective. The goal the Greeks defined beauty as beauty, proportion, and harmony of the human creation. Aquinas in the middle ages defined as beautiful as that seen like. In subjective modernity beauty is also created by the subject who contemplates it. The beauty will be one of the subjects eternally open to discussion.