
"The Case for Comedy", Lanterns & Lances http://books.google.com/books?id=m0RZAAAAYAAJ&q=%22humor+and+pathos+tears+and+laughter+are+in+the+highest+expression+of+human+character+and+achievement+inseparable%22&pg=PA143#v=onepage (1961); previously appeared in The Atlantic Monthly November 1960 http://books.google.com/books?id=6q8GAQAAIAAJ&q=%22and+pathos+tears+and+laughter+are+in+the+highest+expression+of+human+character+and+achievement+inseparable%22&pg=PA98#v=onepage
From Lanterns and Lances