Those who begin coercive ...

Those who begin coercive elimination of dissent soon find themselves exterminating dissenters. Compulsory unification of opinion achieves only the unanimity of the graveyard.
Those who begin coercive elimination of dissent soon find themselves exterminating dissenters. Compulsory unification of opinion achieves only the unanimity of the graveyard.
 Robert H. Jackson

More phrases

All the great things are simple, and many can be expressed in a single word: freedom, justice, honor, duty, mercy, hope.
I know but one freedom and that is the freedom of the mind.
 Antoine de Saint-Exupéry
Freedom is not worth having if it does not connote freedom to err.
The amount of happiness that you have depends on the amount of freedom you have in your heart.
 Thích Nhất Hạnh
Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.

Quotes from the same author

A person gets from a symbol the meaning he puts into it, and what is one man's comfort and inspiration is another's jest and scorn.
 Robert H. Jackson
We can have intellectual individualism and the rich cultural diversities that we owe to exceptional minds only at the price of occasional eccentricity and abnormal attitudes. When they are so harmless to others or to the State as those we deal with here, the prices is not too great. But freedom to differ is not limited to things that do not matter much. That would be a mere shadow of freedom. The test of its substance is the right to differ as to things that touch the heart of the existing order.
 Robert H. Jackson
Particularly when the war power is invoked to do things to the liberties of people, or to their property or economy that only indirectly affect conduct of the war and do not relate to the engagement of the war itself, the constitutional basis should be scrutinized with care. ... I would not be willing to hold that war powers may be indefinitely prolonged merely by keeping legally alive a state of war that had in fact ended. I cannot accept the argument that war powers last as long as the effects and consequences of war for if so they are permanent -- as permanent as the war debts.
 Robert H. Jackson
If we can cultivate in the world the idea that aggressive war-making is the way to the prisoner's dock rather than the way to honors, we will have accomplished something toward making the peace more secure.
 Robert H. Jackson
When the Supreme Court moved to Washington in 1800, it was provided with no books, which probably accounts for the high quality of early opinions.
 Robert H. Jackson