This book is a historical study of influential currents in the philosophy of language and linguistics of the first half of the twentieth century, explored from the perspective of the English scholar C. K. Ogden (1889–1957). Although no ‘Great Man’ in his own right, Ogden had a personal connection, reflected in his work, to several of the most significant figures of the age. The background to the ideas espoused in Ogden’s book The Meaning of Meaning, co-authored with I.A. Richards (1893–1979), is examined in detail, along with the application of these ideas in his international language project Basic English. A richly interlaced network of connections is revealed between early analytic philosophy, semiotics and linguistics, all inevitably shaped by the contemporary cultural and political environment. In particular, significant interaction is shown between Ogden’s ideas, the varying versions of ‘logical atomism’ of Bertrand Russell (1872–1970) and Ludwig Wittgensten (1889–1951), Victoria Lady Welby’s (1837–1912) ‘significs’, and the philosophy and political activism of Otto Neurath (1882–1945) and Rudolf Carnap (1891–1970) of the Vienna Circle. Amid these interactions emerges a previously little known mutual exchange between the academic philosophy and linguistics of the period and the practically oriented efforts of the international language movement.