"The difference between men is in their principle of association. Some men classify objects by color and size and other accidents of appearance; others by intrinsic likeness, or by the relation of cause and effect. The progress of the intellect is to the clearer vision of causes, which neglects surface differences. To the poet, to the philosopher, to the saint, all things are friendly and sacred, all events profitable, all days holy, all men divine. For the eye is fastened on the life, and slights the circumstance. Every chemical substance, every plant, every animal in its growth, teaches the unity of cause, the variety of appearance."

“A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines.”

“There is a freemasonry among the dull by which they recognize and are sociable with the dull, as surely as a correspondent tact in men of genius.”

“The cup of life is not so shallow That we have drained the best That all the wine at once we swallow And lees make all the rest.”

“We are never without a pilot. When we know not how to steer, and dare not hoist a sail, we can drift. The current knows the way, though we do not. The ship of heaven guides itself, and will not accept a wooden rudder.”

“A mollusk is a cheap edition [of man] with a suppression of the costlier illustrations, designed for dingy circulation, for shelving in an oyster-bank or among the seaweed.”

“Only the great generalizations survive. The sharp words of the Declaration of Independence, lampooned then and since as 'glittering generalities,' have turned out blazing ubiquities that will burn forever and ever.”