Harold J. Laski: “They are often ignorant, usually dangerous, and invariably active.”

To deny novelty or grievance a right of expression is a certain, if, indeed, an ultimate, validation of the truth they contain.

The only way to deal with novelty is to understand it, and the only way to deal with grievance is to seek a remedy for the complaint it embodies.

We grant it in religion to deny it in politics; we grant it in politics, to deny it in economic matters.

Ultimately, that denial is always made upon the same ground: it is insisted that the doctrines or practices attacked are subversive of the civil order.