Meditation in Buddhist philosophy deeply explores the Three Characteristics of Reality, also known as the Three Marks of Existence: impermanence (anicca), suffering or unsatisfactoriness (dukkha), and non-self (anatta). Impermanence highlights the transient nature of all things, where every phenomenon is in a constant state of flux. Suffering or unsatisfactoriness is the acknowledgment that life involves suffering, stress, and dissatisfaction, often due to clinging to impermanent things. The concept of non-self challenges the notion of a permanent, unchanging self, suggesting that what we consider the 'self' is a collection of changing phenomena. Meditative practices in this context focus on deeply understanding these characteristics, leading to a profound realization of the true nature of reality, fostering detachment, and culminating in spiritual liberation.