We will meet to preserve the past, not to alter the future.

Yet now as in the 1950s, we wouldn't need such media to scaffold our memories if our own biological resources really did preserve the past in pristine form.

In exchange for the gift of health and immortality they work to preserve the past for sale in the future.

Deliberate efforts must be made in order to preserve the past.

It’s only been in the last century, though, that real effort has gone into preserving that past.