[6ren]

> If I heard a voice

It's more like talking to yourself. (There's a school of thought that language is thought; related is Sapir–Whorf). The limitation of words is a strength; it enables you to pin down ideas precisely, like butterflies for careful examination. But do it too soon, and they slip through the net.

Capturing thought in words implies that thought differs from words; but words are an important tool of thought. Linguistic thought seems a builtin for humans and our intelligence would be less if we did not have words - and not just for communication/collaboration and external storage.

BTW: There was a study of mathematicians done about a century ago IIRC, and it was found that about 70% of them thought visually about mathematics; about 15% verbally/linguistically; and only 5% thought in actual mathematical notation.

[yuushi]

This is actually discussed in some length in Jacques Hadamards "The Mathematicians Mind" - although I'm certainly no psychologist or neurologist, and some of the ideas are probably incredibly out of date, it was interesting reading nonetheless.