“[T]he material of science is coextensive with the whole life, physical and mental, of the universe, and... the limits to our perception of the universe are only apparent, not real.”

Source: The Shape of Time, 1982, p. 18; as cited in Lee (2001, p. 47)

The Varieties of Scientific Experience: A Personal View of the Search for God (2006)

Source: River of Gods (2006), Ch. 9 (p. 93).

Elnith in Ch. 46 : nell latimer’s journal, p. 498
The Visitor (2002)

Eternal Peace (1795)

Source: Alone (1938), Ch. 6
Context: When a man achieves a fair measure of harmony within himself and his family circle, he achieves peace; and a nation made up of such individuals and groups is a happy nation. As the harmony of a star in its course is expressed by rhythm and grace, so the harmony of a man's life-course is expressed by happiness; this, I believe, is the prime desire of mankind.
"The universe is an almost untouched reservoir of significance and value," and man need not be discouraged because he cannot fathom it. His view of life is no more than a flash in time. The details and distractions are infinite. It is only natural, therefore, that we should never see the picture whole. But the universal goal — the attainment of harmony — is apparent. The very act of perceiving this goal and striving constantly toward it does much in itself to bring us closer, and therefore, becomes an end in itself.

Banquet speech http://nobelprize.org/nobel_prizes/physics/laureates/1927/compton-speech.html for his Nobel Prize, 1927.

in an early draft of his doctoral dissertation (1950s).

[…] Let us then take the whole universe as our standard of constancy, and adopt the view of a cosmic being whose body is composed of intergalactic spaces and swells as they swell. Or rather we must now say it keeps the same size, for he will not admit that it is he who has changed. Watching us for a few thousand million years, he sees us shrinking; atoms, animals, planets, even the galaxies, all shrink alike; only the intergalactic spaces remain the same. The earth spirals round the sun in an ever‑decreasing orbit. It would be absurd to treat its changing revolution as a constant unit of time. The cosmic being will naturally relate his units of length and time so that the velocity of light remains constant. Our years will then decrease in geometrical progression in the cosmic scale of time. On that scale man's life is becoming briefer; his threescore years and ten are an ever‑decreasing allowance. Owing to the property of geometrical progressions an infinite number of our years will add up to a finite cosmic time; so that what we should call the end of eternity is an ordinary finite date in the cosmic calendar. But on that date the universe has expanded to infinity in our reckoning, and we have shrunk to nothing in the reckoning of the cosmic being.
We walk the stage of life, performers of a drama for the benefit of the cosmic spectator. As the scenes proceed he notices that the actors are growing smaller and the action quicker. When the last act opens the curtain rises on midget actors rushing through their parts at frantic speed. Smaller and smaller. Faster and faster. One last microscopic blurr of intense agitation. And then nothing.

pp. 90–92 https://books.google.co.uk/books?id=KHyV4-2EyrUC&pg=PA90
The Expanding Universe (1933)