Buddhism is a philosophical religion, and its core is the concept of the Buddha. Profound studies and observations of the Buddha have been conducted from many different perspectives. For instance, the teaching of Mahayana (the Great Vehicle) unfolds its dominant idea that the Buddha is the eternal, infinite truth itself, because he attained that truth, participates in it, and totally identifies himself with it. The Buddha, when regarded this way, is called the Dharma-body, Law-body, or Truth-body. Although the Buddha as Truth gives us some idea of the profundity of his existence (all existence, for that matter), this particular concept of the Buddha may seem somewhat distant from the world of our experience. Such a truth can be understood (as Chapter Two states) only by another Buddha. It is not easy for us ordinary people to awaken to transcendent reality. The Buddha as Truth is too abstract for ordinary people to grasp. We need a more concrete identity of the Buddha in order to feel his existence.