“There are no walls, no bolts, no locks that anyone can put on your mind.”

“Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.”

“There is no gate, no lock, no bolt that you can set upon the freedom of my mind.”

“Literature is open to everybody. I refuse to allow you, Beadle though you are, to turn me off the grass. Lock up your libraries if you like; but there is no gate, no lock, no bolt, that you can set upon the freedom of my mind.”

“Putting food under lock and key was one of the great innovations of your culture. No other culture in history has ever put food under lock and key - and putting it there is the cornerstone of your economy.[...] Because if the food wasn't under lock and key, Julie, who would work?”

“I learned that a sense of privacy doesn't have to depend on walls and doors. At least not external ones. Two people could sit in a room and read or work separately without ever breaking the silence. It's an ability to put up walls in your mind, so no one can get through.”