In the 19th century, sculpture experienced a transition from neoclassicism towards more emotional currents such as romanticism and realism. While neoclassicism sought formal perfection, romanticism expressed intense emotions and realism focused on representing reality accurately. Notable sculptors of this era include Auguste Rodin, known for his work "The Thinker," which fused realist and romantic elements. Monumental sculpture came to prominence with the construction of memorials, and there were technological advances, such as new casting techniques and the use of materials such as iron and bronze. As a whole, 19th century sculpture, with figures such as Rodin, reflected the diversity of artistic currents in response to the cultural and social changes of the time.