I know that he has a great idea of fidelity; and though I suspect he laughs a little inwardly at times at the grand airs "Science" puts on, as she stands marking time, but not getting on, while the trumpets are blowing and the big drums beating,--yet I am sure he has a liking for his specially, and a respect for its cultivators.
But I'll tell you what the Professor said to the Poet the other day .-- My boy, said he, I can work a great deal cheaper than you, because I keep all my goods in the lower story.

You have to hoist yours into the upper chambers of the brain, and let them down again to your customers.

I take mine in at the level of the ground, and send them off from my doorstep almost without lifting.

I tell you, the higher a man has to carry the raw material of thought before he works it up, the more it costs him in blood, nerve, and muscle.
Coleridge knew all this very well when he advised every literary man to have a profession.
-- Sometimes I like to talk with one of them, and sometimes with the other.

After a while I get tired of both.