Ppears to me to be the general instrument which the legislator has employed to express all motion or kinesis. (I ought to explain that kinesis is just iesis (going), for the letter eta was unknown to the ancients; and the root, kiein, is a foreign form of ienai: of kinesis or eisis, the opposite is stasis). This use of rho is evident in the words tremble, break, crush, crumble, and the like; the imposer of names perceived that the tongue is most agitated in the pronunciation of this letter, just as he used iota to express the subtle power which penetrates through all things. The letters phi, psi, sigma, zeta, which require a great deal of wind, are employed in the imitation of such notions