“No one can take away the freedom of a man's soul.”

1990s, Long Walk to Freedom (1995)
Context: It was during those long and lonely years that my hunger for the freedom of my own people became a hunger for the freedom of all people, white and black. I knew as well as I knew anything that the oppressor must be liberated just as surely as the oppressed. A man who takes away another man's freedom is a prisoner of hatred, he is locked behind the bars of prejudice and narrow-mindedness. I am not truly free if I am taking away someone else's freedom, just as surely as I am not free when my freedom is taken from me. The oppressed and the oppressor alike are robbed of their humanity.
When I walked out of prison, that was my mission, to liberate the oppressed and the oppressor both. Some say that has now been achieved. But I know that that is not the case. The truth is that we are not yet free; we have merely achieved the freedom to be free, the right not to be oppressed. We have not taken the final step of our journey, but the first step on a longer and even more difficult road. For to be free is not merely to cast off one's chains, but to live in a way that respects and enhances the freedom of others. The true test of our devotion to freedom is just beginning.

Vapor (1999)

The Post Office Girl (published posthumously in 1982)

Exclusive: Beijing completely broke their promise on Hong Kong, says veteran democrat Martin Lee

"Returning Home" http://www.shambhalasun.com/index.php?option=com_content&task=view&id=2877&Itemid=0, Shambhala Sun (March 2006)
Context: Your true home is in the here and the now. It is not limited by time, space, nationality, or race. Your true home is not an abstract idea. It is something you can touch and live in every moment. With mindfulness and concentration, the energies of the Buddha, you can find your true home in the full relaxation of your mind and body in the present moment. No one can take it away from you. Other people can occupy your country, they can even put you in prison, but they cannot take away your true home and your freedom.

"As I Please," Tribune (28 April 1944) https://books.google.com/books?id=fCRLPIbLP8IC&pg=PA133&dq=%22it+is+almost+impossible+to+think+without+talking%22&hl=en&sa=X&ved=0ahUKEwjZi9qjndzZAhURrVkKHbDDCxkQ6AEILjAB#v=onepage&q=%22it%20is%20almost%20impossible%20to%20think%20without%20talking%22&f=false
"As I Please" (1943–1947)
Context: The greatest mistake is to imagine that the human being is an autonomous individual. The secret freedom which you can supposedly enjoy under a despotic government is nonsense, because your thoughts are never entirely your own. Philosophers, writers, artists, even scientists, not only need encouragement and an audience, they need constant stimulation from other people. It is almost impossible to think without talking.... Take away freedom of speech, and the creative faculties dry up.