Frederick Buechner...

“When you remember me, it means that you have carried something of who I am with you, that I have left some mark of who I am on who you are. It means that you can summon me back to your mind even though countless years and miles may stand between us. It means that if we meet again, you will know me. It means that even after I die, you can still see my face and hear my voice and speak to me in your heart.
For as long as you remember me, I am never entirely lost. When I’m feeling most ghost-like, it is your remembering me that helps remind me that I actually exist. When I’m feeling sad, it’s my consolation. When I’m feeling happy, it’s part of why I feel that way.”