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

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

All progress is based upon a universal, innate desire on the part of every organism to live beyond its income.

Destiny is not a matter of chance, it is a matter of choice; it is not a thing to be waited for, it is a thing to be achieved.

The world began without man, and it will end without him.

I’ve seen the future, brother; it is murder.

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

Men are able to assist fortune but not to thwart her. They can weave her designs, but they cannot destroy them.

The world is dying of machinery; that is the great disease, that is the plague that will sweep away and destroy civilization; man will have to rise against it sooner or later.

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

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

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.