“And now to the decisive factor: our boundless urge to follow and serve, to worship anyone or anything, to believe blindly and with doglike loyalty, all advice to the contrary notwithstanding.”

"Humanism"
The Doubter's Companion (1994)

On Protracted Warfare (1938)
Context: Weapons are an important factor in war, but not the decisive factor; it is people, not things that are decisive. The contest of strength is not only a contest of military and economic power, but also a contest of human power and morale. People necessarily wield military and economic power.

Source: The Complete Essays

2010s, 2018, The Restless Wave (2018)
Context: !-- I want to talk to my fellow Americans a little more, if I may: --> My fellow Americans. No association ever mattered more to me. We’re not always right. We’re impetuous and impatient, and rush into things without knowing what we’re really doing. We argue over little differences endlessly, and exaggerate them into lasting breaches. We can be selfish, and quick sometimes to shift the blame for our mistakes to others. But our country ‘tis of thee.‘ What great good we’ve done in the world, so much more good than harm. We served ourselves, of course, but we helped make others free, safe and prosperous because we weren’t threatened by other people’s liberty and success. We need each other. We need friends in the world, and they need us. The bell tolls for us, my friends, Humanity counts on us, and we ought to take measured pride in that. We have not been an island. We were ‘involved in mankind.‘
Before I leave, I’d like to see our politics begin to return to the purposes and practices that distinguish our history from the history of other nations. I would like to see us recover our sense that we are more alike than different. We are citizens of a republic made of shared ideals forged in a new world to replace the tribal enmities that tormented the old one. Even in times of political turmoil such as these, we share that awesome heritage and the responsibility to embrace it. Whether we think each other right or wrong in our views on the issues of the day, we owe each other our respect, as long as our character merits respect, and as long as we share, for all our differences, for all the rancorous debates that enliven and sometimes demean our politics, a mutual devotion to the ideals our nation was conceived to uphold, that all are created equal, and liberty and equal justice are the natural rights of all. Those rights inhabit the human heart, and from there, though they may be assailed, they can never be wrenched. I want to urge Americans, for as long as I can, to remember that this shared devotion to human rights is our truest heritage and our most important loyalty.

Source: Gibbon's Decline & Fall (1996), Chapter 18 (p. 401)

As quoted in Worth Repeating : More Than 5,000 Classic and Contemporary Quotes (2003) by Bob Kelly, p. 169

Evans v. Manchester, &c. Rail. Co. (1887), L. J. (N. S.) 57 C. D. 157.

On Juche in Our Revolution vol. 2 (1977)

Letter to his son http://www.nytimes.com/2015/09/21/world/with-king-in-declining-health-future-of-monarchy-in-thailand-is-uncertain.html