A sparrow falls to the ground in obedience to a law.

Nay, there are matters in the ordinary transactions of life, such as one might suppose were the mere result of chance, which are ascertained to be of remarkable accuracy when taken in the mass.

For instance, the number of letters put in the post-office without an address; the number of letters wrongly directed; the number containing money; the number unstamped; continue nearly the same, in relation to the number of letters posted, from one year to another.
Now it is the business of man to understand the laws of health, and to provide against their consequences,--as, for instance, in the matter of sickness, accident, and premature death.

We cannot escape the consequences of transgression of the natural laws, though we may have meant well.

We must have done well.