Commerce is the great civilizer.

Why should we desire the destruction of human passions? Take passions from human beings and what is left? The great object should be not to destroy passions, but to make them obedient to the intellect. To indulge passion to the utmost is one form of intemperance - to destroy passion is another. The reasonable gratification of passion under the domination of the intellect is true wisdom and perfect virtue.

Darwin has done more to change human thought than all the priests who have existed.

Courage without conscience is a wild beast.

Think of the egotism of a man who believes that an infinite being wants his praise!

He loves his country best who strives to make it best.

Epithets are not arguments. Abuse does not persuade.