This text examines the relationship between experience and knowledge, defining pieces of knowledge as fragments of information with varying origins. The author distinguishes between knowledge derived from direct experience, which is inherently characterized by internal connections and context, and knowledge adopted from others, where these links are often missing or obscured. In human memory, both types of knowledge typically coexist in a mixed state, requiring critical reflection to differentiate between them. The discussion further addresses the Greek concept of 'mathesis,' interpreting it as a body of knowledge that, while not necessarily obtained through direct insight, can nonetheless incorporate or rely upon it. Finally, the author asserts that although philosophy must encompass a broad knowledge of 'mathesis universalis,' it should never be reduced to a mere collection of disparate facts. The text emphasizes the vital importance of contextual interconnectedness and critical reflection within the process of human understanding.