“Humor could not flourish in a wholly serious and rational atmosphere.”

"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.

interview with Lorin Morgan-Richards by Rose Traul of Columbia College Chicago (22 January 2013).

Un Art de Vivre (The Art of Living) (1939), The Art of Loving

Source: Victim Prime (1987), Chapter 48 (pp. 187-188)

1930s
Original: (de) Die Diktatur bringt den Maulkorb und dieser die Stumpfheit. Wissenschaft kann nur gedeihen in einer Atmosphäre des Freien Wortes.

"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., ISBN 0836916077 ISBN 9780836916072 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 Original text of this "nineteen word essay" https://www.google.com/#tbm=bks&q=%22Albert+Einstein+in+his+nineteen+word+essay+on+Science+and+Dictatorship%22 appears under the German title, "Wissenschaft und Diktatur" in Prozess der Diktatur (1930), Otto Forst de Battaglia (1889-1965), ed., Amalthea-Verlag, p.108. https://books.google.com/books?id=Q9DRAAAAMAAJ&dq=editions%3ATP1X5VVtHxAC&focus=searchwithinvolume&q=%22Die+Diktatur+bringt+den+maulkorb+und+dieser+die+stumpfheit.+Wissenschaft+kann+nur+gedeihen+in+einer+Atmosph%C3%A4re+des+freien+Wortes%22

High Times interview (2002)
Context: Usually, my witticisms are composed on the spot. They're simply intrinsic; an inseparable, integral, organic part of my writing process — doubtlessly because humor is an inseparable, integral part of my philosophical worldview. The comic sensibility is vastly, almost tragically, underrated by Western intellectuals. Humor can be a doorway into the deepest reality, and wit and playfulness are a desperately serious transcendence of evil. My comic sense, although deliberately Americanized, is, in its intent, much closer related to the crazy wisdom of Zen monks and the goofy genius of Taoist masters than it is to, say, the satirical gibes on Saturday Night Live. It has both a literary and a metaphysical function.

Roger Sherman Loomis The Development of Arthurian Romance (New York: Dover, [1963] 2000) p. 67.
Criticism

Of Studies
Essays (1625)
Context: To spend too much time in studies is sloth; to use them too much for ornament, is affectation; to make judgment wholly by their rules, is the humor of a scholar. They perfect nature, and are perfected by experience: for natural abilities are like natural plants, that need proyning, by study; and studies themselves, do give forth directions too much at large, except they be bounded in by experience.