“Respect must be given voluntarily, no matter if you are an elder or a leader, you cannot take it by force.”

Letter to Edmund Halley (June 20, 1686) quoted in I. Bernard Cohen and George E. Smith, ed.s, The Cambridge Companion to Newton (2002) p. 204

Essayez d’imaginer une forme de travail imposée par la Force, qui ne soit une atteinte à la Liberté ; une transmission de richesse imposée par la Force, qui ne soit une atteinte à la Propriété. Si vous n’y parvenez pas, convenez donc que la Loi ne peut organiser le travail et l’industrie sans organiser l’Injustice.
The Law (1850)

Don Soderquist “ Live Learn Lead to Make a Difference https://books.google.com/books?id=s0q7mZf9oDkC&lpg=pg=PP1&dq=Don%20Soderquist&pg=PP1#v=onepage&q&f=false, Thomas Nelson, April 2006 p. 135.
On Treating Everyone with Respect

Playboy interview (May 1995)
Context: My point is that you cannot force social change at a speed that it cannot go. Social change is evolutionary, not revolutionary. Deep social change takes time. And slowly the culture is changing. The MTV generation is far more tolerant, and that tolerance is growing.

1920s, Truth is a Pathless Land (1929)
Context: I maintain that Truth is a pathless land, and you cannot approach it by any path whatsoever, by any religion, by any sect. That is my point of view, and I adhere to that absolutely and unconditionally. Truth, being limitless, unconditioned, unapproachable by any path whatsoever, cannot be organized; nor should any organization be formed to lead or to coerce people along any particular path. If you first understand that, then you will see how impossible it is to organize a belief. A belief is purely an individual matter, and you cannot and must not organize it. If you do, it becomes dead, crystallized; it becomes a creed, a sect, a religion, to be imposed on others. This is what everyone throughout the world is attempting to do. Truth is narrowed down and made a plaything for those who are weak, for those who are only momentarily discontented. Truth cannot be brought down, rather the individual must make the effort to ascend to it. You cannot bring the mountain-top to the valley. If you would attain to the mountain-top you must pass through the valley, climb the steeps, unafraid of the dangerous precipices.

24 May 2005 letter to Prime Minister Laisenia Qarase

Reported in The Leadership of Speaker Sam Rayburn, Collected Tributes of His Congressional Colleagues (1961), p. 34; House Doc. 87–247.