Do not boast about tomorrow, for you do not know what a day may bring.

Not a change for the better in our human housekeeping has ever taken place that wise and good men have not opposed it—have not prophesied that the world would wake up to find its throat cut in consequence.

The less a man knows about the past and the present, the more insecure must prove to be his judgment of the future.

The future is no more uncertain than the present.

Often the prudent, far from making their destinies, succumb to them; it is destiny which makes them prudent.