The szlachta's prevalent mentality and ideology were manifested in "Sarmatism", a name derived from a myth of the szlachta's origin in the powerful ancient nation of Sarmatians. This belief system became an important part of szlachta culture and affected all aspects of their lives. It was popularized by poets who exalted traditional village life, peace and pacifism. It was also manifested in oriental-style apparel (the żupan, kontusz, sukmana, pas kontuszowy, delia); and made the scimitar-like szabla, too, a near-obligatory item of everyday szlachta apparel. Sarmatism served to integrate the multi-ethnic nobility as it created an almost nationalistic sense of unity and pride in the szlachta's "Golden Liberty" (złota wolność). Knowledge of Latin was widespread, and most szlachta freely mixed Polish and Latin vocabulary (the latter, "macaronisms"—from "macaroni") in everyday conversation.
What was the prevalent mentality and ideology called? 
Sarmatism