A vast philosophical system that is organized in a geometric, precise and logical manner, yet subject to multiple interpretations, is Spinoza's philosophy.Pantheism, God-intoxicated, atheism, idealism, empiricism, nominalism, realism, stoicism, and.... In this paper, Utilizing a descriptive-analytical approach and library tools, while emphasizing Descartes' influence on Spinoza's philosophy, we aim to demonstrate that Spinoza is primarily situated in the transition from Platonic unity, particularly Neoplatonism, to meaning of life as narrated by Schopenhauer and Nietzsche. In other words, although Spinoza is a Cartesian, at the core of Spinoza's philosophy, which is heavily influenced by Bruno, there lies a critique and rejection of unity as interpreted by Plato and Neoplatonists. The equation of God or Nature (Deus sive Natura) signifies that, contrary to what Persian-speaking authors emphasize, Spinoza's main objective is primarily to highlight nature and the meaningfulness of life.