The article explores fundamental questions about the nature of reality, drawing primarily from Carlo Rovelli's book, "Reality Is Not What It Seems." It begins by introducing Rovelli, a theoretical physicist specializing in quantum gravity theory, presented as the most promising "theory of everything" that aims to unify all physical mysteries. The author intends to break down the book's insights into three parts: the essence of matter, space, and time. The first section traces the understanding of matter from Democritus's atomic theory, through Einstein's proof of atoms via Brownian motion, to the quantum mechanical view where matter is seen not as solid objects but as processes or events resulting from particle interactions. The second part discusses the evolution of understanding space, from Newton's fixed stage to Einstein's concept of space as a flexible gravitational field, reconciling it with quantum mechanics through the quantum gravity theory's view of space as a woven fabric of tiny fields. Finally, the text presents Rovelli's startling assertion that time does not fundamentally exist, arguing it's merely a human construct stemming from our macroscopic understanding and the irreversibility of heat (entropy), which defines the direction of time.