One of the appeals of the modern arts to the young generations is the intentional traces of human labor, the proof of art creation by means of visible brushwork, layers of paint and scribbled seemingly randomness that echoes the human natures. Here, far away from the fear and burden of being criticized by the convention of neoclassicism or other approved styles, the artists of the 19th century were bold and adventurous. They experimented, explored and tried out the subject with all different techniques. In these works, they shines not for their craftsmanship but for their artistic curiosity. [...]