From Nathaniel Hawthorne (1804-1864), American novelist, The Scarlet Letter (1850):
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
This is appropriate for the political season.
I suppose you could apply it to politicians in an ideal sense, but Hawthorne predates modern media. The whole POINT of successful acting for the camera is to convincingly present a different face to the multitude than the one you wear in normal life. Thousands earn a fat paycheck every day without suffering any bewilderment over which one is true. It’s just a skill you learn through training and practice.
On the topic of face changing, the below video portends a future beyond the current political caricature capability of a “Look at that face” statement.
http://laughingsquid.com/stanford-team-develops-software-capable-of-digitally-transferring-one-persons-facial-expressions-to-anothers-face/?utm_source=Laughing+Squid&utm_campaign=376b81986c-RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_bc3ba5b9f3-376b81986c-424957605
Cool, but also disturbing. Seeing is not necessarily believing.