Grenville Kleiser,
"Impromptu"; or, How to Think on Your Feet
“ Esteeming delivery of such vast importance to the orator, there is no wonder that he should have labored for months together in his subterranean study to form his action and improve his voice. To the superficial thinker, the study of gesture and of the management of the voice may appear to be but "vanity of vanities"—gaudy tinselry and worthless decoration; but the experience of all time has proved that they are powerful to persuade and strong to convince. We all know how much meaning—how much expression—how much power there may be in a look, in a tone of the voice, or in a motion. ”
