Not sure, text wins hands down at sharing the ideas of one person, with many, across space and time.

I can read the thoughts of a philosopher who lived on literally the other side of the world, several thousand years ago.

I'm unsure of, but would love to know, any other medium capable of that

And what of histories great artists? You can take a walk through a gallery and see many things people wanted to express, reading the artists textual description of it won't invoke the same ideas in you.

You're right, and they do say a painting is worth a thousand words

My only counter would be - when you and I look at them do we get the same words (but I suppose you could also argue that for a book, poem, etc)