The rub is that the pursuit ...

The rub is that the pursuit of happiness, as an end in itself, tends automatically, and widely, to be replaced by the pursuit of pleasure with a consequent general softening of the fibers of will, intelligence, spirit.
The rub is that the pursuit of happiness, as an end in itself, tends automatically, and widely, to be replaced by the pursuit of pleasure with a consequent general softening of the fibers of will, intelligence, spirit.
 Whittaker Chambers

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

At issue in the Hiss Case was the question whether this sick society, which we call Western civilization, could in its extremity still cast up a man whose faith in it was so great that he would voluntarily abandon those things which men hold good, including life, to defend it.
 Whittaker Chambers
A witness, in the sense that I am using the word, is a man whose life and faith are so completely one that when the challenge comes to step out and testify for his faith, he does so, disregarding all risks, accepting all consequences.
 Whittaker Chambers
The satellite revolt was not sparked from the West. It was sparked by Communism itself.
 Whittaker Chambers
My children, as long as you live, the shadow of the Hiss Case will brush you. In every pair of eyes that rests on you, you will see pass, like a cloud passing behind a woods in winter, the memory of your father - dissembled in friendly eyes, lurking in unfriendly eyes.
 Whittaker Chambers