Fragmentary, No. 4

[I]t must be remembered, that while our language is yet living, and variable by the caprice of every tongue that speaks it, these words are hourly shifting their relations, and can no more be ascertained in a dictionary, than a grove, in the agitation of a storm, can be accurately delineated from its picture in the water . . .

♦ Samuel Johnson, from the Preface to A Dictionary of the English Language (1755)