This text explores the relationship between philosophical thought and common sense. The author argues that philosophy cannot be grounded in or limited by common sense; instead, it must critically acknowledge both common sense and everyday experience. Criticality is an essential feature of philosophy, requiring a reflective distance from self-evident truths. While philosophical inquiry may seem to reject common sense, it must not dismiss it entirely, as criticism requires a subject to evaluate. The text critiques the Cartesian approach of rejecting everything except indubitable principles. Rather than seeking a purely evident foundation, philosophy should remain open to all types of experience, including those that seem to contradict common norms or appear marginal. By treating common sense as material for critical examination rather than an absolute boundary, philosophy maintains its necessary openness and analytical rigor, ensuring that no experience is overlooked or prematurely dismissed as error.