Be bold, be bold, and everywhere be bold.

Pervading all nature we may see at work a stern discipline , which is a little cruel that it may be very kind.

Civilization is a progress from an indefinite, incoherent homogeneity toward a definite, coherent heterogeneity.

An argument fatal to the communist theory, is suggested by the fact, that a desire for property is one of the elements of our nature.

During human progress, every science is evolved out of its corresponding art.

Agnostics are people who, like myself, confess themselves to be hopelessly ignorant concerning a variety of matters, about which metaphysicians and theologians, both orthodox and heterodox, dogmatize with the utmost confidence.

No phrase can convey the idea of surprise so vividly as opening the eyes and raising the eyebrows. A shrug of the shoulders would lose much by translation into words.