Leibniz’s philosophical and philological interests overlapped at many points, and some of his fundamental philosophical notions shaped his views on language, particularly his thinking about language history, in decisive ways. Although he is better known for his work on universal language, his writings on natural language and language history are worth consideration both for their subtlety and for the insight they give into the complex history of thought on this topic. The principles of sufficient reason, praedicatum inest subjecto, and his (...) doctrine of marks and traces are echoed in his work on natural languages and in his account of their histories. He attempted to reconcile philosophical investigations of the natural languages with the Biblical accounts of the confusion of languages at Babel, and in his approach to etymology he participated in a long tradition of thinking about language and its essence as hidden or secret, the truth of which remains scattered in signs and which etymology alone may occasionally reveal. (shrink)

The work of Robert Hooke on acoustics and music theory is a larger subject than might seem the case from studies of his career so far available. First, there are his experiments for the Royal Society which can be defined as purely acoustical, which anticipate later experiments performed by men such as J. Sauveur and E. Chladni. Second, there are passages in many of his writings which by extensive use of musical analogy attempt to account for all physical phenomena of (...) the universe, which operates on the principles of ‘harmony’ and ‘dissonance’. It is in this context that the hitherto unpublished manuscript presented at the end of this paper should be considered. This essay, which combines both the older tradition of the ‘praise of music’ and the newer consideration of the physical nature of musical sound, illustrates a particular aspect of Hooke's thought which exercised a profound influence on all his studies. (shrink)