Our equivalent of the Lord's Prayer was the English author Alan Alexander Milne's poem "Now We Are Six," which ends: But now I am six, I'm as clever … - David A. Sinclair

For Robin Marantz Henig, a columnist at the New York Times, the "bitter truth" about mortality came late in life, after she became a grandparent. "Beneath all the wonderful moments you may be lucky enough to share in and enjoy," she wrote, "your grandchild's life will be a long string of birthdays you will not live to see."3

A new scientific truth does not triumph by convincing its opponents and making them see the light, Planck wrote shortly before his death in 1947, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.

In my mind, there are few sins so egregious as extending life without health. This is important. It does not matter if we can extend lifespans if we cannot extend healthspans to an equal extent. And so if we're going to do the former, we have an absolute moral obligation to do the latter.