Do you think you can take all that away without putting anything in its place?
Why not?
If I took all the butter out of the churn, what must I do if I want more butter still?
Put more cream in.
So, if I want more grass to grow, I must put on the soil more of what grass is made of.
But the butter don't grow, and the grass does.
What does the grass grow in?
The soil.
Yes.

Just as the butter grows in the churn.

So you must put fresh grass- stuff continually into the soil, as you put fresh cream into the churn.
You have heard the farm men say, "That crop has taken a good deal out of the land"?
Yes.
Then they spoke exact truth.

What will that hay turn into by Christmas?
Can't you tell?
Into milk, of course, which you will drink; and into horseflesh too, which you will use.
Use horseflesh?
Not eat it?
No; we have not got as far as that.

We did not even make up our minds to taste the Cambridge donkey.