Sociology . the fundamental character or spirit of a culture; the underlying sentiment that informs the beliefs, customs, or practices of a group or society; dominant assumptions of a people or period

In the Greek ethos the individual was highly valued.

the character or disposition of a community, group, person, etc.

the moral element in dramatic literature that determines a character's action rather than his or her thought or emotion.

noun

mentality , mind , mindset , psyche