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Positiveness of manner, and redoubtable inner conviction stem only from the mastery of superior knowledge, and this last is the fruit of application, preparation, thoroughness and the willingness to struggle to gain the desired end.
Positiveness of expression suggests the superior's fixity of purpose, with consequent inspiration to subordinates to prosecute their tasks with determination.
Positiveness is a good quality for preachers and orators, because he that would obtrude his thoughts and reasons upon a multitude, will convince others the more, as he appears convinced himself.