It is surprising to note that the question of immortality is almost never addressed in the bulk of what is called speculative philosophy. To learn about it, one has to turn to specific works, even though the problem is fundamental to any understanding of existence. In other words: its mere possibility transforms the nature of reality, which speculative philosophy aims to investigate. Without addressing it, without even considering it, a philosophy is mutilated, if not lacking a real foundation. Turning one’s back on the unknown out of alleged prudence is certainly one of the greatest imprudences a philosopher can commit.