"Handwriting, bearing as it does the cachet of individuality, has always interested those to whom things human make their intimate appeal. Curious observations relative to it have long been current, the existence, for instance, of national as well as family and personal chirographics; the perversions of it that take form as mirror writing or even—it is said—as inverted writing; the whimsy shown by the bizarre characters, by the tendency to irrelevant and extravagant flourishes in the writing of those suffering from certain forms of mental disorder. Attention has been called to the similarity existing between a man's handwriting and the manner in which he walks or gesticulates. It has been claimed that age and sex and profession leave their impress upon writing, that the pen craft of the painter mirrors minutely the grace and distinction that marks the sweep of his brush across the canvas."