I can't say to you: "Good morning!"..."Hello!"...
I can't wish you have a good night.
I don't know your name.
I can't ask you: "How are you?"..." Are you all right?"
I don't know the color of your eyes.
But, I can write you a letter.
And your answer for me will confirm that, you are all right.
Best wishes,
Liudmyla.