Full Idea
Once a man has seen that values depend upon himself, he can only will one thing, and that is freedom as the foundation of all values.
Gist of Idea
If values depend on us, freedom is the foundation of all values
Source
Jean-Paul Sartre (Existentialism and Humanism [1945], p.51)
Book Reference
Sartre,Jean-Paul: 'Existentialism and Humanism', ed/tr. Mairet,Philip [Methuen 1980], p.51
A Reaction
I don't think so. Is freedom the foundation of all arithmetic, because I am untrammelled when doing addition? Values are ridiculous if they don't reflect facts.