Full Idea
During the time that the aristocracy was dominant, the concepts honour, loyalty etc. were dominant, and during the dominance of the bourgeoisie the concepts of freedom, equality etc.
Clarification
The 'bourgeoisie' are the middle classes
Gist of Idea
When aristocracy or the bourgeoisie dominate, certain values dominate with them
Source
K Marx / F Engels (The German Ideology [1846], §1.B)
Book Reference
Marx,K./Engels,F.: 'The German Ideology', ed/tr. Arthur,C.J. [Lawrence and Wishart 1985], p.65
A Reaction
This is a very anti-Aristotelian view, based on a very different idea of human nature. It must, to some extent, be true, but freedom and equality will be a value for the proletariat, and loyalty will be a key value if the family is central.