This text examines Zeno’s famous dictum regarding the relationship between "the one" and "being," accompanied by a critical commentary by Ladislav Hejdánek. The central theme is the ontological distinction between a mere "heap" of elements and a true, internally integrated being. Hejdánek criticizes the Eleatic school for conceptualizing unity as a static, objective, and almost geometric construct that inherently excludes multiplicity. In contrast, he highlights the Heraclitean approach, where unity is understood as the active unification of the many, preserving multiplicity within the whole. The author argues that the problem of unity is not a matter of spatial arrangement but rather a temporal challenge. A true "one" is fundamentally an event and a unity of process, not a fixed structure existing outside of time. The text thus offers an alternative perspective on the integrity of being, emphasizing the processual nature of reality and internal unification as a constitutive element of existence. This approach moves beyond traditional Eleatic paradoxes by shifting the focus from static forms to the dynamic, event-based character of ontological unity and integrity.