Pablo Picasso and Surrealism

Picasso's Surrealist period is really interesting in both his paintings and sculptures. It is noticeable the change of his style in his Surrealists paintings, but somehow I feel that there are still some inches of Cubism and other sryles in there. Certainly, this works aren't pure Surrealism, but they do fit this beloved movement. After today's class I just drew a conclusion that Picasso, just as Frank Lloyd Wright, doesn't follows any manifesto, rules or specific techniques...  I think that Picasso doesn't do Cubism or Surrealism, Picasso just does Picasso, why would he do anything else? He is the man of the century!