During his inaugural lecture on "Meaning and Truth" at Oxford University in November of 1969, P. F. Strawson took up what was at the time a key problem in the philosophy of language. Professor Strawson formulated the problem as "the conflict between the theorists of communication-intention and the theorists of formal semantics." The significance of Strawson's statement lies not so much in the acknowledgment of competing theories, as in the recognition of the philosophic importance of the interpersonal nature of the communication, that is, the speech act.