“That there is a common cause, an that it is either what we call material progress or something closely connected with material progress, becomes more than an inference when it is noted that the phenomena we class together and speak of as industrial depression are but intensifications of phenomena which always accompany material progress, and which show themselves more clearly and strongly as material progress goes on. Where the conditions to which material progress everywhere tends are the most fully realized—that is to say, where population is densest, wealth greatest, and the machinery of production and exchange most highly developed — we find the deepest poverty, the sharpest struggle for existence, and the most of enforced idleness.”

George Santayana, from The Wine of Absurdity (1966).

Interview in The Voice of Ethiopia (5 April 1948).
Context: The progress of science can be said to be harmful to religion only in so far as it is used for evil aims and not because it claims a priority over religion in its revelation to man. It is important that spiritual advancement must keep pace with material advancement. When this comes to be realized man's journey toward higher and more lasting values will show more marked progress while the evil in him recedes into the background. Knowing that material and spiritual progress are essential to man, we must ceaselessly work for the equal attainment of both. Only then shall we be able to acquire that absolute inner calm so necessary to our well-being.
It is only when a people strike an even balance between scientific progress and spiritual and moral advancement that it can be said to possess a wholly perfect and complete personality and not a lopsided one.

1910s, The New Nationalism (1910)

The Stark Munro Letters (1894)
Context: The more we progress the more we tend to progress. We advance not in arithmetical but in geometrical progression. We draw compound interest on the whole capital of knowledge and virtue which has been accumulated since the dawning of time. Some eighty thousand years are supposed to have existed between paleolithic and neolithic man. Yet in all that time he only learned to grind his flint stones instead of chipping them. But within our father's lives what changes have there not been? The railway and the telegraph, chloroform and applied electricity. Ten years now go further than a thousand then, not so much on account of our finer intellects as because the light we have shows us the way to more. Primeval man stumbled along with peering eyes, and slow, uncertain footsteps. Now we walk briskly towards our unknown goal.

quote, early 1950's
Source: 1950s, from 'Abstract Expressionism' (1990), p. 41

Source: Mathematics as an Educational Task (1973), p. 75-76; As cited in: Anne Birgitte Fyhn (2007, p. 6)

Referring to economics and the Great Depression
Essays in Persuasion (1931), The Great Slump of 1930 (1930)
Context: This is a nightmare, which will pass away with the morning. For the resources of nature and men's devices are just as fertile and productive as they were. The rate of our progress towards solving the material problems of life is not less rapid. We are as capable as before of affording for everyone a high standard of life … and will soon learn to afford a standard higher still. We were not previously deceived. But to-day we have involved ourselves in a colossal muddle, having blundered in the control of a delicate machine, the working of which we do not understand. The result is that our possibilities of wealth may run to waste for a time — perhaps for a long time.

Dr. Stockmann, Act IV
An Enemy of the People (1882)

Source: The New State, 1918, p. 117. Chapter XIV: "The Group Principle at Work"