All good things which exist are the fruits of originality.

To mistake money for wealth, is the same sort of error as to mistake the highway which may be the easiest way of getting to your house or lands, for the house and lands themselves.

The guesses which serve to give mental unity and wholeness to a chaos of scattered particulars, are accidents which rarely occur to any minds but those abounding in knowledge and disciplined in intellectual combinations.

If opponents of all important truths do not exist, it is indispensable to imagine them and supply them with the strongest arguments which the most skillful devil's advocate can conjure up.

The most cogent reason for restricting the interference of government is the great evil of adding unnecessarily to its power.

The pupil who is never required to do what he cannot do, never does what he can do.

What citizens of a free country would listen to any offers of good and skillful administration in return for the abdication of freedom?