Words are meaningless.
This axiom is a lie.
While words in and of themselves may possess no meaning, there is a world of meaning summoned by their presence. Every word in the english language carries with it associations that are personal to each individual. When we communicate, we use specific words in order to convey a message, but the most important message exists between each word. These pockets of silence, the pockets of absence, would not be possible without the use of language. Can language really be seen as arbitrary then?
We must learn to hear the voices that speak to us in silence. We must remember to hear that which is unspoken, and relate to each other on the emotional level as well as the rational one. We must not unlearn the language of our ancestors.
I think an entire essay could be written on the connotations of the word "a".