“My reaction is that free speech not only lives, it rocks!”

"Science and Dictatorship," in Dictatorship on Its Trial, by Eminent Leaders of Modern Thought (1930) - later as Dictatorship on Trial (1931), Otto Forst de Battaglia (1889-1965), ed., Huntley Paterson, trans., introduction by Winston Churchill, George G. Harrap & Co., (Reprinted 1977, Beaufort Books Inc., p. 107. https://books.google.com/books?id=IjsiAAAAMAAJ&dq=9780836916072&focus=searchwithinvolume&q=%22only+in+an+atmosphere+of+free+speech%22 https://books.google.com/books?id=alq9M3_8qIcC&dq=9780836916072&hl=en&sa=X&ved=0ahUKEwj9w8nJkYfKAhUL12MKHf5uCscQ6AEIHDAA http://babel.hathitrust.org/cgi/pt/search?q1=%22Science%20can%20flourish%20only%20in%20an%20atmosphere%20of%20free%20speech%22;id=uc1.%24b47955;view=1up;seq=9;start=1;sz=10;page=search;orient=0 http://catalog.hathitrust.org/Record/000590821
1930s
Context: A dictatorship means muzzles all round and consequently stultification. Science can flourish only in an atmosphere of free speech.

'Do not let Germany be dragged back to chaos and destruction': EDL founder Tommy Robinson speaks to 40,000 strong crowd at the Pegida anti-immigrant rally in Germany http://www.dailymail.co.uk/news/article-3279659/German-far-right-activists-accuse-Angela-Merkel-treason-hold-night-time-floodlit-rally-Dresden-mark-anniversary-anti-immigrant-group.html, Daily Mail (19 October 2015)
2015

"Stay Quiet and You'll Be Okay" http://www.steynonline.com/6943/stay-quiet-and-youll-be-okay steynonline.com (9 May 2015)

Counterterrorism and Cybersecurity: Total Information Awareness (2nd Edition), 2015

Mi è impossibile cingere i fianchi di una ragazza con il mio braccio destro e serrare il suo sorriso nella mia mano sinistra, per poi tentare di studiare i due oggetti separatamente. Allo stesso modo, non ci è possibile separare la vita dalla materia vivente, allo scopo di studiare la sola materia vivente e le sue reazioni. Inevitabilmente, studiando la materia vivente e le sue reazioni, studiamo la vita stessa.
The Nature of Life, Academic press, 1948.

2010s, Who's too Weak to Live with Freedom? (2013)

"Quotes", The Educated Imagination (1963), Talk 6: The Vocation of Eloquence

Address at Columbia University (1991)
Context: "Our lives teach us who we are." I have learned the hard way that when you permit anyone else's description of reality to supplant your own — and such descriptions have been raining down on me, from security advisers, governments, journalists, Archbishops, friends, enemies, mullahs — then you might as well be dead. Obviously, a rigid, blinkered, absolutist world view is the easiest to keep hold of, whereas the fluid, uncertain, metamorphic picture I've always carried about is rather more vulnerable. Yet I must cling with all my might to … my own soul; must hold on to its mischievous, iconoclastic, out-of-step clown-instincts, no matter how great the storm. And if that plunges me into contradiction and paradox, so be it; I've lived in that messy ocean all my life. I've fished in it for my art. This turbulent sea was the sea outside my bedroom window in Bombay. It is the sea by which I was born, and which I carry within me wherever I go.
"Free speech is a non-starter," says one of my Islamic extremist opponents. No, sir, it is not. Free speech is the whole thing, the whole ball game. Free speech is life itself.

"For the Defense Written for the Associated Press, for use in my obituary" (20 November 1940)
1940s–present
Context: Having lived all my life in a country swarming with messiahs, I have been mistaken, perhaps quite naturally, for one myself, especially by the others. It would be hard to imagine anything more preposterous. I am, in fact, the complete anti-Messiah, and detest converts almost as much as I detest missionaries. My writings, such as they are, have had only one purpose: to attain for H. L. Mencken that feeling of tension relieved and function achieved which a cow enjoys on giving milk. Further than that, I have had no interest in the matter whatsoever. It has never given me any satisfaction to encounter one who said my notions had pleased him. My preference has always been for people with notions of their own. I have believed all my life in free thought and free speech—up to and including the utmost limits of the endurable.