“Thinking of the key, each confirms a prison.”

“Men are prisoners of their genitalia and women are the keepers of the keys to paradise.”

“A prison becomes a home when you have the key.”

“In chains and darkness, wherefore should I stay, And mourn in prison, while I keep the key.”

“The key to all fanatical beliefs is that they are self-confirming….(some beliefs are) fanatical not because they are "false", but because they are expressed in such a way that they can never be shown to be false.”

“A prisoner never stops thinking about getting out of the prison. Life in the world is like sitting in a prison. One who doesn't realize that doesn't think of getting liberation.”

“There are prisoners in Guantanamo Bay that have not been tried, have no legal representation, their families cannot see them and are obviously kept in a strange land outside their own country. There is no international monitoring of their conditions and fate. No one knows whether they are prisoners, POWs, accused or criminals. European investigators have confirmed the existence of secret prisons in Europe too.”

“… one can still say that quantum mechanics is the key to understanding magnetism. When one enters the first room with this key there are unexpected rooms beyond, but it is always the master key that unlocks each door.”

“This was the door to both sustenance and sanity. And we were each other's key.”

“Man and woman are two locked caskets, of which each contains the key to the other.”