“The grandest of heroic deeds are those which are performed within four walls and in domestic privacy.”

1960s, Memorial Day speech (1963)
Context: On this hallowed ground, heroic deeds were performed and eloquent words were spoken a century ago. We, the living, have not forgotten– and the world will never forget– the deeds or the words of Gettysburg. We honor them now as we join on this Memorial Day of 1963 in a prayer for permanent peace of the world and fulfillment of our hopes for universal freedom and justice.

1950s, Loving Your Enemies (Christmas 1957)
Context: Third we must not seek to defeat or humiliate the enemy but to win his friendship and understanding. At times we are able to humiliate our worst enemy. Inevitably, his weak moments come and we are able to thrust in his side the spear of defeat. But this we must not do. Every word and deed must contribute to an understanding with the enemy and release those vast reservoirs of goodwill which have been blocked by impenetrable walls of hate.

Man's Greatest Achievement (1908; 1930)
Context: According to an adopted theory, every ponderable atom is differentiated from a tenuous fluid, filling all space merely by spinning motion, as a whirl of water in a calm lake. By being set in movement this fluid, the ether, becomes gross matter. Its movement arrested, the primary substance reverts to its normal state. It appears, then, possible for man through harnessed energy of the medium and suitable agencies for starting and stopping ether whirls to cause matter to form and disappear. At his command, almost without effort on his part, old worlds would vanish and new ones would spring into being. He could alter the size of this planet, control its seasons, adjust its distance from the sun, guide it on its eternal journey along any path he might choose, through the depths of the universe. He could make planets collide and produce his suns and stars, his heat and light; he could originate life in all its infinite forms. To cause at will the birth and death of matter would be man's grandest deed, which would give him the mastery of physical creation, make him fulfill his ultimate destiny.

Source: The Order of Time (2018), p. 11

Source: Keeping a Rendezvous

3rd Part
The Book of the New Moral World (1836-1844)
Context: Where are these rational practices to be taught and acquired? Not within the four walls of a bare building, in which formality predominates... But in the nursery, play-ground, fields, gardens, workshops, manufactures, museums and class-rooms. …The facts collected from all these sources will be concentrated, explained, discussed, made obvious to all, and shown in their direct application to practice in all the business of life.

Illustrations of Sterne, Bibliomania, line 121, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

Source: The Persians (472 BC), line 349 (tr. Robert Potter)