Paint is made up of pigments, which are solid color chemicals, vehicles like resins that transport the pigment, and solvents like water that make the paint easier to work with. People have long used painting to express emotions like anger, happiness, and sadness. The earliest known paintings date back 20,000 years to caves in China and Egypt. Vincent van Gogh is considered one of the most famous painters, having created almost 900 paintings between 1881-1890 that expressed his evolution as an artist.