To say a sensible word on death, we like to examine the Heraclitus of Ephesus’ thinking. Among the number of fragments, left in the works of the ancient and contemporary writers, we chose those revealing the paradoxical link the writer had found between life and death. These two opposites are inseparably connected. While trying to understand the meaning of Heraclitus’ thought we observe that in his mind, joy can not be without pain, nor good without evil, nor light without darkness, nor day without night. And vice versa ! Death necessarily implies birth, conflict implies reconciliation, silence implies sound, oblivion implies memory. So Heraclitus expresses his philosophical or mystical way of thinking and living, his quest of an existential truth, that of movement and alteration, the perpetual development of all things and the unity of contraries.