For example, we can learn a lot about Benjamin Franklin and how relevant he still is today from some of his quotations:
"Would you persuade, speak of interest, not of reason."
He was in advertising.
"Be at war with your vices, at peace with your neighbors, and let every new year find you a better man."
He was an optimist.
"All wars are follies, very expensive and very mischievous ones."
He was an activist for peace.
"Games lubricate the body and the mind."
He was a gamer.
"All mankind is divided into three classes: those that are immovable, those that are movable, and those that move."
He was an observant mover and shaker.
"Honesty is the best policy."
He was in social media.