The text examines the core of philosophy through the phenomenon of thinking, which is defined as inherently metaphorical in the sense of transcending toward something external. According to the author, philosophy faces two primary tasks: analyzing thinking as a distinct intellectual activity, and investigating the various entities and relations to which this thinking refers, regardless of whether they can be strictly known. The author emphasizes the necessity of constant critical reflection and the identification of errors. In this view, the history of philosophy is a continuous process of uncovering past mistakes, while the ultimate ambition of a philosopher is to encounter new, significant errors that open up previously unexplored territories. The text highlights the risk of systemic errors that are difficult to detect within a specific framework of thought and encourages the expansion of human understanding through conscious risk-taking. Working with error is thus considered a fundamental tool for a deeper comprehension of the philosophical process and the structure of reality.