This article deals with the problem of the knowledge’s utility. This issue is considered from three perspectives. The dualistic perspective is based on the two-component structure: knowledge–reality; the subject–the object. In this regard, the knowledge’s utility is measured by the measure of the power that can be obtained over the world. From the monistic perspective knowledge is useful if it allows the internal improvement of the bearer of the knowledge. Knowledge in terms of the emergent system arises in the fluid cognitive relationship between components of changing system. Relations between the system (whole) and units (part of ) are variable and undetermined by the specificity of the individual components which are also reciprocal and mutually forming.