Evolution pays and that is why there is evolution

A calculating engine is one of the most intricate forms of mechanism, a telegraph key one of the simplest. But compare their value.

When we try to imagine a chaos we fail. ... In its very fiber the mind is an order and refuses to build a chaos.

Discovery begins by finding the discoverer.

Let truth be a banner big enough to hide the man who holds it up.

Some young folks have wind-fall minds, prematurely detached from the tree of knowledge for a life-long sourness and pettiness.

Ten builders rear an arch, each in turn lifting it higher; but it is the tenth man, who drops in the keystone, who hears our huzzas.