I think every professor and writer is in some way an exhibitionist because his or her normal activity is a theatrical one. When you give a lesson the situation is the same as writing a book. You have to capture the attention, the complicity of your audience.
Umberto EcoIf you want to become a man of letters and perhaps write some Histories one day, you must also lie and invent tales, otherwise your History would become monotonous. But you must act with restraint. The world condemns liars who do nothing but lie, even about the most trivial things, and it rewards poets, who lie only about the greatest things.
Umberto Eco