Il Penseroso is an 1845 oil on canvas painting by British-American painter Thomas Cole, founder of the Hudson River School.

The work is currently possessed by the Los Angeles County Museum of Art.

[3] As a child, his surroundings were of Lancashire, England, an area known to be an epicenter of Britain’s primarily industrial region.

Il Pensoroso was based on sketches Cole had made of Lake Nemi in Italy.

The two works were finished in 1845 and exhibited at the National Academy of Design in the spring of 1846.