5. Robert Massin

Massin is a French graphic designer, typographer and art director who became famous for his experimental use of typography. Massin worked as an art director of Editions Gallimard, a book publisher, for many years. He also wrote "La Lettre et L'image" about design. Massin used graphic design to enhance the story and text's meaning.

http://www.eyemagazine.com/feature/article/language-unleashed