His writing styles and literary forms were equally varied. He penned essays and treatises, poetry and lectures, travel guides and manuals, letters and even a fairy tale. He also made detailed sketches and paintings of rocks, plants, birds, landscapes, and architectural structures and ornamentation.
The elaborate style that characterised his earliest writing on art gave way in time to plainer language designed to communicate his ideas more effectively. In all of his writing, he emphasised the connections between nature, art and society.
He was hugely influential in the latter half of the 19th century and up to the First World War. After a period of relative decline, his reputation has steadily improved since the 1960s with the publication of numerous academic studies of his work. Today, his ideas and concerns are widely recognised as having anticipated interest in environmentalism, sustainability and craft.