The problem of freedom in America is that of maintaining a competition of ideas, and you do not achieve that by silencing one brand of idea.

There is a hate layer of opinion and emotion in America. There will be other McCarthys to come who will be hailed as its heroes.

There is no crime in the cynical American calendar more humiliating than to be a sucker.

There are almost no limits to the discoveries of how the human brain operates in illness and health, in sleep and waking and dreaming, in calm and under tension. The question is how far man can put these discoveries to use without using them not for cure but for power.

Principles-and I have in mind such principles as states' rights or national sovereignty or the free market or pacifism-have a way of drying up while the sap of life goes flowing in another direction.

Every mob, in its ignorance and blindness and bewilderment, is a League of Frightened Men that seeks reassurance in collective action.

A people's speech is the skin of its culture.