The problem with words

"But perhaps the most mysterious thing [Ransom] ever said about [his voyage to Venus] was this. I was questioning him on the subject--which he doesn't often allow--and had incautiously said, "Of course I realize it's all too vague for you to put into words," when he took me up rather sharply, for such a patient man, by saying, "On the contrary, it is words that are vague. The reason why the thing can't be expressed is that it's too definite for language."

C.S. Lewis, Perelandra