The pioneering work of Johann Winckelmann (1717-1768) identified a homoerotic appreciation of male beauty in classical Greek sculpture, a fascination that had endured in Western art since the Greeks. After Winckelmann, however, sometimes the value (even the possibility) of queer beauty in art was denied. Several theorists after Winckelmann, notably the philosopher Immanuel Kant, broke sexual attraction and aesthetic appreciation into separate or dueling domains. In turn, sexual desire and aesthetic pleasure conceived as discrete categories had to be profoundly rethought by later writer.