Full Idea
Mythologies become ideologies when we play a role in them, live in them, take action and take sides.
Gist of Idea
Ideologies are mythologies which guide our actions
Source
Robert C. Solomon (The Passions [1976], 6.1)
Book Reference
Solomon,Robert C.: 'The Passions (1993 ed)' [Hackett 1993], p.161
A Reaction
This may well be a sceptical American attitude to ideology, since 'mythology' implies a fiction. But I think for most of us there exists the possibility of a good ideology, which correctly points us towards a better life. Dangerous things, though!