As natural selection works solely by and for the good of each being, all corporeal and mental endowments will tend to progress toward perfection.

A change of fortune hurts a wise man no more than a change of the moon.

The future is no more uncertain than the present.

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

The future...something which everyone reaches at the rate of sixty minutes an hour, whatever he does, whoever he is.

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

I don’t try to describe the future. I try to prevent it.

Every man takes the limits of his own vision for the limits of the world.

God seems to have left the receiver off the hook, and time is running out.

Tomorrow never comes, man. It’s all the same fucking day.

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.

Real generosity toward the future lies in giving all to the present.

Fate leads the willing and drags along those who hang back.