—His provisions.

—What happened to the ax?

—It was all blunted.

—Very good; but there is one thing which, perhaps, you do not know. At the moment that Robinson gave the first blow with his ax, he saw a plank which the waves had cast up on the shore.

—Oh, the lucky accident! He ran to pick it up?

—It was his first impulse; but he checked himself, reasoning thus:

"If I go after this plank, it will cost me but the labor of carrying it and the time spent in going to and returning from the shore.

"But if I make a plank with my ax, I shall in the first place obtain work for fifteen days, then I shall wear out my ax, which will give me an opportunity of repairing it, and I shall consume my provisions, which will be a third source of labor, since they must be replaced. Now, labor is wealth. It is plain that I will ruin myself if I pick up this stranded board. It is important to protect my personal labor, and now that I think of it, I can create myself additional labor by kicking this board back into the sea."

—But this reasoning was absurd!

—Certainly. Nevertheless it is that adopted by every nation which protects itself by prohibition. It rejects the plank which is offered it in exchange for a little labor, in order to give itself more labor. It sees a gain even in the labor of the custom house officer. This answers to the trouble which Robinson took to give back to the waves the present they wished to make him. Consider the nation a collective being, and you will not find an atom of difference between its reasoning and that of Robinson.