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

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

I like the dreams of the future better than the history of the past.

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

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

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

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

He alone who owns the youth gains the future.

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

My interest is in the future, because I am going to spend the rest of my life there.

Time will reveal everything. It is a babbler and speaks even when not asked.

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

Little folks become their little fate.