“The very phrase "foreign affairs" makes an Englishman convinced that I am about to treat of subjects with which he has no concern.”

Jeremy Corbyn condemns ex-Labour MP's comments in anti-Semitism row https://www.bbc.co.uk/news/uk-scotland-scotland-politics-45244081, BBC News, 20 August 2018
2010s, 2018

This was the method followed by Euclid, who, fortunately for us, never dreamed of a geometry of triangles, as distinguished from a geometry of circles, or a separate application of the arithmetics of addition and subtraction; but made one help out the other as he best could.
The Differential and Integral Calculus (1836)

Spokespersons of US Right 'In Most Cases Stunningly Ignorant, Interview in Der Spiegel http://www.spiegel.de/international/world/0,1518,733079,00.html, December 6, 2010.

1940s, "Autobiographical Notes" (1949)
Context: A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the more extended is its area of applicability. Therefore the deep impression which classical thermodynamics made upon me. It is the only physical theory of universal content concerning which I am convinced that, within the framework of the applicability of its basic concepts, it will never be overthrown (for the special attention of those who are skeptics on principle).

"Liberty In England", Speech (June 21, 1935), reprinted in Abinger Harvest (1936).

King makes two biblical allusions to Luke 15:17 and 1 Timothy 6:10: "For the love of money is the root of all evil".
1950s, Paul's Letter to American Christians (1956)
Context: I understand that you have an economic system in America known as Capitalism. Through this economic system you have been able to do wonders. You have become the richest nation in the world, and you have built up the greatest system of production that history has ever known. All of this is marvelous, but Americans, there is the danger that you will misuse your Capitalism. I still contend that money can be the root of all evil. It can cause one to live a life of gross materialism. I am afraid that many among you are more concerned about making a living than making a life. You are prone to judge the success of your profession by the index of your salary and the size of the wheel base on your automobile, rather than the quality of your service to humanity. The misuse of Capitalism can also lead to tragic exploitation. This has so often happened in your nation. They tell me that one tenth of one percent of the population controls more than forty percent of the wealth. Oh America, how often have you taken necessities from the masses to give luxuries to the classes. If you are to be a truly Christian nation you must solve this problem. You cannot solve the problem by turning to communism, for communism is based on an ethical relativism and a metaphysical materialism that no Christian can accept. You can work within the framework of democracy to bring about a better distribution of wealth. You can use your powerful economic resources to wipe poverty from the face of the earth. God never intended for one group of people to live in superfluous inordinate wealth, while others live in abject deadening poverty. God intends for all of his children to have the basic necessities of life, and He has left in this universe "enough and to spare" for that purpose. So I call upon you to bridge the gulf between abject poverty and superfluous wealth.

The Notebooks of Leonardo da Vinci (1883), IX The Practice of Painting
Context: When you wish to represent a man speaking to a number of people, consider the matter of which he has to treat and adapt his action to the subject. Thus, if he speaks persuasively, let his action be appropriate to it. If the matter in hand be to set forth an argument, let the speaker, with the fingers of the right hand hold one finger of the left hand, having the two smaller ones closed; and his face alert, and turned towards the people with mouth a little open, to look as though he spoke; and if he is sitting let him appear as though about to rise, with his head forward. If you represent him standing make him leaning slightly forward with body and head towards the people. These you must represent as silent and attentive, all looking at the orator's face with gestures of admiration; and make some old men in astonishment at the things they hear, with the corners of their mouths pulled down and drawn in, their cheeks full of furrows, and their eyebrows raised, and wrinkling the forehead where they meet.

1870s, Speech in the House of Representatives (1871)

The Future of Civilization (1938)