By liberty I mean the assurance that every man shall be protected in doing what he believes to be his duty against the influences of authority and majorities, custom and opinion.

A wise person does at once, what a fool does at last. Both do the same thing; only at different times.

Liberty, next to religion has been the motive of good deeds and the common pretext of crime.

The issue which has swept down the centuries and which will have to be fought sooner or later is the people versus the banks.

Guard against the prestige of great names; see that your judgments are your own; and do not shrink from disagreement; no trusting without testing

A history that should pursue all the subtle threads from end to end might be eminently valuable, but not as a tribute to peace and conciliation.

Every error pronounces judgment on itself when it attempts to apply its rules to the standard of truth.