Because man is the only animal capable of conceptualizing his own existence — thinking about his life, questioning it, imagining future possibilities — man is therefore also the only animal capable of conceptualizing his own non-existence, i.e., his own death.

Because man is the only animal capable of conceptualizing his own existence — thinking about his life, questioning it, imagining future possibilities — man is therefore also the only animal capable of conceptualizing his own non-existence, i.e., his own death.