This philosophical reflection explores the distinction between the cognition of reality and the cognition of the truth regarding that reality. Drawing on Ancient Greek thought, it examines the concept where knowledge (episteme) is inherently linked to truth, understood as the unconcealment of being (aletheia). The author references Aristotle's view that truth correlates directly with the degree of being, suggesting that the difficulty in grasping truth resides in human perception rather than in the things themselves. A central critique is directed at the Greek undervaluation of time and change within the epistemological process. The text raises a fundamental question: if a thing exists prior to being known, while its truth (as true knowledge) does not yet exist, what occurs when a being is transitioned into the realm of truthful cognition? By challenging the static perception of truth, the reflection emphasizes the temporal and dynamic nature of the act of knowing in relation to the variability of the world.