John Ruskin (1819-1900) was an English art critic, social thinker, and writer. He is best known for his influential works on art and architecture, particularly his appreciation of the Gothic style and his criticism of industrialization. Ruskin believed that art should reflect the beauty of nature and the moral values of society. In addition to his contributions to art criticism, Ruskin was a passionate advocate for social reform. He emphasized the importance of craftsmanship and the dignity of labor, arguing that industrialization often dehumanized workers. His ideas influenced various movements, including the Arts and Crafts Movement led by figures like William Morris.