Ferdinand de Saussure's Course in General Linguistics is one of the most influential texts of the 20th-century - an astonishing feat for what is, at heart, a series of deeply technical lectures about the structure of human languages. What the Course's vast influence shows, fundamentally, is the power of good interpretative skills. The interpretative tasks of laying down and clarifying definitions are often vital to providing the logical framework for all kinds of critical thinking - whether it be solving problems in business, or esoteric academic research. At the time sat which Saussure...