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

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

The future is no more uncertain than the present.

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

It would be madness, and inconsistency, to suppose that things which have never yet been performed can be performed without employing some hitherto untried means.