John Ruskin (1819–1900) is an English writer, artist, poet, literary critic, but most of all he is known as an art theorist who had a huge influence on the development of art criticism and aesthetics in the second half of the 19th - early 20th centuries. Ruskin did a lot to strengthen the position of the Pre-Raphaelites, for example, in the article “Pre-Raphaelitism”, and also greatly influenced the anti-bourgeois pathos of the movement. In addition, he “discovered” for his contemporaries William Turner, a painter and graphic artist, a master of landscape painting. “Lectures on Art” is Ruskin’s fundamental work, which he himself considered his most significant work, in which he outlined a new methodology for analyzing art. Art, according to Ruskin, is inextricably linked with morality, religion, nature and human life in general.