How could I describe Sergey by words?
I suppose that a famous quote, related to his country, Russia,
can be suitable for his personality too.
So I dare to paraphrase Fedor Tutchev:

”You can't understand Sergey with the mind;
You can't explain him with common parameters.
He has a peculiar character.
Sergey can only be trusted.”

He’s my best friend and he’s the only person,
besides my husband,
who has never disappointed me
in any slight way either.

Sergey is a wonderful fellow traveller
Without his help all these photos would have never been taken,
at least not this way and not with the same fun and joy.