The reason is that they utter these words of theirs not by virtue of a skill, but by a divine power - otherwise, if they knew how to speak well on one topic thanks to a skill, they would know how to speak about every other topic too.
Related Keywords: Words Know Thanks Reason Virtue Skill Divine
Related Authors: Confucius Friedrich Nietzsche Bruce Lee C. S. Lewis Thomas Jefferson Henry David Thoreau Ralph Waldo Emerson