Final answer:
In Philosophical Hinduism, it is true that realizing the unity of Atman (soul) and Brahman (divine) is fundamental to achieving liberation (moksha) from the cycle of rebirth.
Step-by-step explanation:
In Philosophical Hinduism, a central concept is the realization that the Atman (soul or self) and Brahman (the divine reality) are one. This concept is often explored through the Upanishads and other Hindu philosophical texts. Brahman is generally viewed as the ultimate reality that underpins everything, and Atman as the true self or soul. Realizing the oneness of Atman and Brahman is said to lead to moksha, which is the liberation from the cycle of reincarnation and suffering. According to these teachings, the Atman is eternal and reincarnated until it achieves this liberation. True knowledge, or the understanding that Atman is Brahman, comes through various practices such as yoga, meditation, rituals, and living according to dharma (righteousness, moral values) and karma (actions and deeds).