The principle for Day #27 on the 101-day book report says: "Accept this contradiction; your body will pass on, but you are an eternal spirit."
When you get into this kind of discussion, it just comes down to beliefs. I would only weigh in to say that if your beliefs bring you peace, I think that's really a wonderful thing.
So I thought I'd google around for some wisdom here and I came up with two quotes that resonate with me:
“What we do for ourselves dies with us. What we do for others and the world remains and is immortal.”--Albert Pine.
“I don't want to achieve immortality through my work. I want to achieve it through not dying.” --Woody Allen