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

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.

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

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

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