What is one of the defining characteristics of philosophy according to the author?

One of the defining characteristics of philosophy is the rational exploration of metaphysical questions. This aspect highlights philosophy's focus on understanding fundamental nature, existence, and the underlying principles that govern reality. Unlike empirical sciences, which rely on observation and experimentation, philosophy engages in critical thinking and logical reasoning to confront questions that may not have concrete or empirical answers, such as those related to existence, knowledge, morality, and the nature of the universe.

This rational exploration allows philosophers to consider various perspectives, dissect arguments, and seek coherence in complex ideas. It goes beyond merely accepting traditional beliefs or subjective perceptions, striving instead for a deeper understanding and discussion of abstract concepts. This characteristic of philosophy encourages continual inquiry and reflection, making it distinct from other disciplines that may prioritize different methodologies or forms of validation.