If we do the right thing, long after we are gone, the records of the contributions we made will always be there.

Even his griefs are a joy long after to one that remembers all that he wrought and endured.

As long as we remember a person, they're not really gone. Their thoughts, their feelings, their memories, they become a part of us.

I suppose if a man has something once, always something of it remains.

When all is lost, there is still a memory.

And never forget, there is memory.

Just remember that the things you put into your head are there forever, he said.

The memory of how we work will endure beyond the products of our work.

And the tear that we shed, though in secret it rolls,
Shall long keep his memory green in our souls.

reminding himself to remember forever that the pen’s a long arm from the grave.

Nobody is forgotten, when it is convenient to remember him.

Heroes get remembered, but legends never die.

He who has gone, so we but cherish his memory, abides with us, more potent, nay, more present than the living man

Something still exists as long as there's someone around to remember it.