Your work includes a great range of experience, as well as of form. What do you think is the greatest quality a poet can have? Is it formal, or is it a quality of thinking?
I don’t know that you can put the needed qualities in hierarchic order, but he must have a continuous curiosity, which of course does not make him a writer, but if he hasn’t got that he will wither. And the question of doing anything about it depends on a persistent energy. A man like Agassiz is never bored, never tired. The transit from the reception of stimuli to the recording, to the correlation, that is what takes the whole energy of a lifetime.