Without memory, time would be unarmed against us

"Mr. Trask, do you think the thoughts of people suddenly become important at a given age? Do you have sharper feelings or clearer thoughts now than when you were ten? Do you see as well, hear as well, taste as vitally?"
"Maybe you're right," said Adam.
"It's one of the great fallacies, it seems to me," said Lee, "that time gives much of anything but years and sadness to a man."
"And memory."
"Yes, memory. Without that, time would be unarmed against us."

John Steinbeck, East of Eden (Penguin Books, 2000) p. 458