The concept of value is often discredited for its ambivalence: value increases and decreases, and is valid for one person but not necessarily for the next. Philosophies of value are subjectivist or contaminated by economic rationality. I show, from Gilbert Simondon, that value can be conceived of as a variable quantity without falling into levelling or axiological relativism. This implies dismissing the neo-Kantian separation of ontology and axiology, rejecting the conception of culture as a set of values and the bipolarity (...) of value oppositions, and finally thinking of value from a physical-mathematical rather than an economic analogy. (shrink)