“Knowledge [savoir] in general cannot be reduced to science, nor even to learning [connaissance]. Learning is the set of statements which, to the exclusion of all other statements, denote or describe objects and may be declared true or false. Science is a subset of learning. It is also composed of denotative statements, but imposes two supplementary conditions on their acceptability: the objects to which they refer must be available for repeated access, in other words, they must be accessible in explicit conditions of observation; and it must be possible to decide whether or not a given statement pertains to the language judged relevant by the experts.”