“How frail, he thought, is the compact that holds our government together! Good will alone is all that sustains it.”

Ford is known to have used the words "truth is the glue that holds government together" several times prior to this.
1970s, First Presidential address (1974)
Context: I believe that truth is the glue that holds government together, not only our Government but civilization itself. That bond, though strained, is unbroken at home and abroad. In all my public and private acts as your President, I expect to follow my instincts of openness and candor with full confidence that honesty is always the best policy in the end.

Remarks on Annual Elections (1775)

Source: "I Thought I Could Not Be Hurt," quoted in the introduction to Letters Home: Correspondence 1950–1963 (1975) as Plath's first poem, written at age 14

Source: "The House of Mirth" http://books.google.com/books?id=plFdLlYHwZ8C&pg=PA69&lpg=PA69&dq=No+insect+hangs+its+nest+on+threads+as+frail+as+those+which+will+sustain+the+weight+of+human+vanity.&source=bl&ots=j0EPPhjIZW&sig=MQMjyNy5yKK97Ok4bGqRWfC3obE&hl=en&ei=T5F0TMqyMIuisAOczpyMBg&sa=X&oi=book_result&ct=result&resnum=4&ved=0CCEQ6AEwAw#v=onepage&q=No%20insect%20hangs%20its%20nest%20on%20threads%20as%20frail%20as%20those%20which%20will%20sustain%20the%20weight%20of%20human%20vanity.&f=false (1905), ch. X, pg. 69

Ron English's Fauxlosophy (2016)

Senate speech (7 May 1860)
1860s

It was to be in the first instance, in a considerable degree, a government of accommodation as well as a government of laws. Much was to be done by prudence, much by conciliation, much by firmness. Few, who are not philosophical spectators, can realize the difficult and delicate part, which a man in my situation had to act. All see, and most admire, the glare which hovers round the external happiness of elevated office. To me there is nothing in it beyond the lustre, which may be reflected from its connection with a power of promoting human felicity.
1790s, Letter to Catharine Macaulay Graham (1790)

Bk. I, l. 1-8.
Aurora Leigh http://digital.library.upenn.edu/women/barrett/aurora/aurora.html (1857)
Context: Of writing many books there is no end;
And I who have written much in prose and verse
For others' uses, will write now for mine,—
Will write my story for my better self,
As when you paint your portrait for a friend,
Who keeps it in a drawer and looks at it
Long after he has ceased to love you, just
To hold together what he was and is.

Source: The Rules of Attraction