Evolution pays and that is why there is evolution

Ignorance may find a truth on its doorstep that erudition vainly seeks in the stars.

Educated folk keep to one another's company too much, leaving other people much like milk skimmed of its cream.

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

We despair of changing the habits of men, still we would alter institutions, the habits of millions of men.

No gun is perfectly true. So the marksman, that he may hit the bull's-eye, points elsewhere.

Degree is much: the whole Atlantic might be lukewarm and never boil us a potato.