„Secret thoughts are only half free: they fly undisturbed in the skies of the inner freedom, but they can never leave them.“

„I thought you guys said only some of the vampire bikes could fly?"
"Only some of them can!"
"How did you know this was one of them?“

—  Cassandra Clare, The Mortal Instruments

"I didn't!"
Clary and Jace, pg. 289-290
The Mortal Instruments, City of Bones (2007)

„Always seek less turbulent skies.
Hurt. Fly above it.
Betrayal. Fly above it.
Anger. Fly above it.
You are the one who is flying the plane.“

—  Marianne Williamson American writer 1952

„You can only protect your liberties in this world by protecting the other man's freedom. You can only be free if I am free.“

—  Clarence Darrow American lawyer and leading member of the American Civil Liberties Union 1857 - 1938

Address to the court in People v. Lloyd (1920)

„It was a melancholy secret that reality can arouse desires but never satisfy them.“

—  Erich Maria Remarque, book Three Comrades

Source: Three Comrades

„I thought that my invincible power would hold the world captive, leaving me in a freedom undisturbed. Thus night and day I worked at the chain with huge fires and cruel hard strokes. When at last the work was done and the links were complete and unbreakable, I found that it held me in its grip.“

—  Rabindranath Tagore Bengali polymath 1861 - 1941

31
Gitanjali http://www.spiritualbee.com/gitanjali-poems-of-tagore/ (1912)

„In a free state there should be freedom of speech and thought.“

—  Tiberius 2nd Emperor of Ancient Rome, member of the Julio-Claudian dynasty -42 - 37 BC

Variant translation: In a free state, both the tongue and the mind ought to be free.
From Suetonius, The Twelves Caesars, ch. 28
Original: (la) In civitate libera linguam mentemque liberas esse debere (jactabat).

„Only two can keep a secret if one of them is dead.“

—  Sara Shepard, Pretty Little Liars

Source: Pretty Little Liars

„I've never minded being disciplined. I'd always rather have a quiet evening in than go to a wild party. Discipline for me has always been the foundation which leaves me free to fly.“

—  Julie Andrews British actress, singer, author, theatre director, and dancer 1935

Woman & Home (July 2000)

„For those who know the value of and exquisite taste of solitary freedom (for one is only free when alone), the act of leaving is the bravest and most beautiful of all.“

—  Isabelle Eberhardt Swiss explorer and author 1877 - 1904

Source: The Nomad: The Diaries of Isabelle Eberhardt

„The man who can keep a secret may be wise, but he is not half as wise as the man with no secrets to keep.“

—  E. W. Howe Novelist, magazine and newspaper editor 1853 - 1937

Country Town Sayings (1911), p9.

„Fly free and happy beyond birthdays and across forever, and we'll meet now and then when we wish, in the midst of the one celebration that never can end.“

—  Richard Bach American spiritual writer 1936

There's No Such Place As Far Away (1978)

„when skies are hanged and oceans drowned, the single secret will still be man“

—  E.E. Cummings, book 1 × 1

Source: 1 x 1 (1944), XX

„I am capable of projecting myself into my little inner cinema... I free myself through a secret exit from the attempts to encircle my soul.“

—  Salvador Dalí Spanish artist 1904 - 1989

Source: Quotes of Salvador Dali, 1971 - 1980, Comment on deviant Dali, les aveux inavouables de Salvador Dali, p. unknown

„The secret of happiness is freedom and the secret of freedom is courage.“

—  Thucydides, History of the Peloponnesian War

Book II, 2.43
History of the Peloponnesian War, Book II

„The secret of freedom lies in educating people, whereas the secret of tyranny is in keeping them ignorant.“

—  Maximilien Robespierre French revolutionary lawyer and politician 1758 - 1794

Original French: Le secret de la liberté est d'éclairer les hommes, comme celui de la tyrannie est de les retenir dans l'ignorance
Source: Oeuvres, Volume 2 http://books.google.com/books?id=iSMVAAAAQAAJ p. 253.

„It's those that fight hardest for freedom who are never free.“

—  David Clement-Davies, book Fell

Source: Fell

„The whole secret of existence is to have no fear. Never fear what will become of you, depend on no one. Only the moment you reject all help are you free.“

—  Swami Vivekananda Indian Hindu monk and phylosopher 1863 - 1902

Pearls of Wisdom

„Can I love someone… and still think/fly? Love is flying, sown, floating. Thought is solitary flight, beating wings.“

—  Susan Sontag American writer and filmmaker, professor, and activist 1933 - 2004

Source: As Consciousness is Harnessed to Flesh: Journals and Notebooks, 1964-1980

„My words fly up, my thoughts remain below: Words without thoughts never to heaven go.“

—  William Shakespeare, Hamlet

Source: Hamlet