Written words fail us. Very often, in fact.

Spoken words fail us. Less often, but very often too.

I think which one 'fails us more' depends on who you're with. Its like how I can communicate better with some face to face, and better with others through msn or sms.

Maybe we can never express ourselves. Not art, words, or music.
No, we CAN express ourselves, but not truly. Not thoroughly.