Wolfflin goes on to state another obvious - that there are differences in style between artists, but that style is also a product of the "school, the country and the race", as well as the times - "a new zeitgeist introduces a new form". What is mysterious and the question that Wolfflin tries to answer, is how artists, using the same elements such as line, working in the same time and place, and depicting the same subject, can produce two very different works of art - what in the individual artist produces the distinctive style? Why is a drawing by Michelangelo instantly recognizable as such, or a Leonardo?
Because I am taking Baroque Art, I particularly enjoyed Wolfflin's description of Renaissance artists as seeking clarity, defining form with line, (although he does not mention the Venetian artists who worked with color, and had a much more painterly approach, what he would describe as an open form). He describes Baroque artists by saying of their work that "composition, light, and color no longer serve to merely define form, but have a life of their own....It is not a difference of quality if the Baroque departed from the age of Durer and Raphael, but as we have said, a different attitude to the world." Again, an obvious point, but very nicely put.