Just because a person talks with surety means only one of two things, either he thinks he is right or he is a good BS artist but not that s/he is right for the more right, true, decent and Divine wisdom is, the less hubris, cockiness, self-surety it projects, for true wisdom, Divine wisdom, Torah and Jewish mysticism is almost always shared in a manner of love, not self-indulgence, promotion, egotistically or shouted.