This is a fortunate and necessary law of nature.

The immediate good or evil of favorable or unfavorable circumstances must fall upon the producer, in order to influence him invincibly to seek the one and to avoid the other.
Again, when a workman succeeds in his labor, the _immediate_ benefit of this success is received by him.

This again is necessary, to determine him to devote his attention to it.

It is also just; because it is just that an effort crowned with success should bring its own reward.
But these effects, good and bad, although permanent in themselves, are not so as regards the producer.

If they had been so, a principle of progressive and consequently infinite _inequality_ would have been introduced among men.