Lock up your libraries if you ...

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.
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.

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

Some people go to priests; others to poetry; I to my friends.
Why are women... so much more interesting to men than men are to women?
Women have served all these centuries as looking glasses possessing the power of reflecting the figure of man at twice its natural size.
If woman had no existence save in the fiction written by men, one would imagine her a person of utmost importance; very various; heroic and mean; splendid and sordid; infinitely beautiful and hideous in the extreme; as great as a man; some think even greater.
King old ladies assure us that cats are often the best judges of character. A cat will always to to a good man, they say.