- Zeitgeist: is a concept meaning "spirit of the age". It refers to an invisible agent or force dominating the characteristics of a given epoch in world history.
- Ethos: is a Greek word meaning "character" that is used to describe the guiding beliefs or ideals that characterize a person, community, nation, or ideology.
- Telos: is a term used by philosopher Aristotle to refer to the full potential or inherent purpose or objective of a person or thing, similar to the notion of an [[Values|"end goal" or "raison d'être"]]. Moreover, it can be understood as the "supreme end of man's endeavor".
- Eudaimonia: is a Greek term that means "flourishing" or "well-being". It is often translated as "happiness" or "fulfillment".