Aestheticism is an art movement that emerged in the late 19th century, emphasizing beauty and sensory experience over moral or social themes. It advocates the idea that art should be appreciated for its aesthetic value rather than its message or purpose. This movement is often associated with the phrase "art for art's sake," suggesting that art exists independently of any didactic function. Key figures in Aestheticism include Oscar Wilde, James Whistler, and Walter Pater. Their works often focus on the exploration of beauty, form, and color, challenging traditional notions of art and encouraging a deeper appreciation of the visual and sensory aspects of creative expression.