Full Idea
Only in community with others has each individual the means of cultivating his gifts in all directions; only in the community, therefore, is personal freedom possible.
Gist of Idea
Only in community are people able to cultivate their gifts, and therefore be free
Source
K Marx / F Engels (The German Ideology [1846], §1.D)
Book Reference
Marx,K./Engels,F.: 'The German Ideology', ed/tr. Arthur,C.J. [Lawrence and Wishart 1985], p.83
A Reaction
This is where Aristotle and Marx agree, and I agree too. I think we could drop the word "free", which is to some degree a necessary right and precondition of human happiness, but is not the real target.