Had the poet said so in so many words, he would have been far less effective. Because, as I understand it, anything suggested is far more effective than anything laid down. Perhaps the human mind has the tendency to deny a statement. Remember what Emerson said: arguments convince nobody. They convince nobody because they are presented as arguments. Then we look at them, we weigh them, we turn them over, and we decide against them.
But when something is merely said or--better still--hinted at, there is a kind of hospitality in our imagination. We are ready to accept it. I remember reading, some thirty years ago, the works of Martin Buber--I thought of them as being wonderful poems. Then, when I went to Buenos Aires, I read a book by a friend of mine, Dujovne, and I found in its pages, much to my astonishment, that Martin Buber was a philosopher and that all his philosophy lay in the books I had read as poetry. Perhaps I had accepted those books because they came to me through poetry, through suggestion, through the music of poetry, and not as arguments. I think that somewhere in Walt Whitman the same idea can be found: the idea of reasons being unconvincing. I think he says somewhere that he finds the night air, the large few stars, far more convincing than mere arguments.
This Craft of Verse p.31-32 - Jorge Luis Borges