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.

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

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

The future comes like an unwelcome guest.

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

People will not look forward to posterity who never look backward to their ancestors.

The future, like everything else, is no longer quite what it used to be.

The future is no more uncertain than the present.

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

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

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

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