Ideology (noun)

1. A particular set of beliefs, values, and principles, especially about politics or culture.
2. A systematic body of concepts, especially about human thought and culture.
3. A way of thinking about a particular issue or aspect of society.

Origin:

Early 19th century: from french idéologie, or via german from greek idea + -logy.

Examples:

1. His ideology was based on a belief in the free market.
2. The new ideology has gained a lot of support in recent years.
3. The ideology of the political party is focused on economic growth and individual freedoms.
4. The ideology of the movement is centered around social justice and equality.
5. The ideology behind the new policy is to increase access to education for all citizens.