Words are curious, aren’t they.
By making sounds out of one’s own head, you can cause a mental state in some other head.
By printing shapes called “letters” into strings, another who has memorized the meanings of the strings can come into a close approximation of some meaning you want to share- you can cause a mental state in them, this time not by sounds coming out of your head but by those printed shapes.
Love that - especially given the 'logos' handle!