Miss Keller is tall and strongly built, and has always had good health. She seems to be more nervous than she really is, because she expresses more with her hands than do most English-speaking people. One reason for this habit of gesture is that her hands have been so long her instruments of communication that they have taken to themselves the quick shiftings of the eye, and express some of the things that we say in a glance. All deaf people naturally gesticulate. Indeed, at one time it was believed that the best way for them to communicate was through systematized gestures, the sign language invented by the Abbe de l’Epee.