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

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

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

We must confess that at present the rich predominate, but the future will be for the virtuous and ingenious.

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