"Honne and tatemae" are terms that many feel are linchpinned to the Japanese psyche.
The first — honne — refers to the intimate truth of the soul, one's uttermost honest feelings, the rough skin under all the powder and rouge.
The second — tatemae — is the face one shows to the world. That toothy grin that perhaps hides one's desire to bite. Analogous to the aluminum siding that helps the house gleam on the surface, while the inside bursts with termites.