"If what I assume is true, it is still excellent to be convinced of it, but if there is nothing after death, I will at least during the time before my death be less burdensome to my companions because of complaints, and furthermore this folly of mine will not last long—for that would indeed be an evil—but in a short time will vanish."
January 1, 1970
https://en.wikiquote.org/wiki/Immortality