“I am conscious that an equal division of property is impracticable. But the consequences of this enormous inequality producing so much misery to the bulk of mankind, legislators cannot invent too many devices for subdividing property.. [a] means of silently lessening the inequality of property is to exempt all from taxation below a certain point, and to tax the higher portions of property in geometrical progression as they rise.”

Source: What is Property? (1840), Ch. V: "Psychological Explanation of the Idea of Justice and Injustice, and the Determination of the Principle of Government and of Right," Part 2: Characteristics of Communism and of Property
Context: Communism is inequality, but not as property is. Property is the exploitation of the weak by the strong. Communism is the exploitation of the strong by the weak. In property, inequality of conditions is the result of force, under whatever name it be disguised: physical and mental force; force of events, chance, fortune; force of accumulated property, &c. In communism, inequality springs from placing mediocrity on a level with excellence. This damaging equation is repellent to the conscience, and causes merit to complain; for, although it may be the duty of the strong to aid the weak, they prefer to do it out of generosity, — they never will endure a comparison. Give them equal opportunities of labor, and equal wages, but never allow their jealousy to be awakened by mutual suspicion of unfaithfulness in the performance of the common task.
Communism is oppression and slavery. Man is very willing to obey the law of duty, serve his country, and oblige his friends; but he wishes to labor when he pleases, where he pleases, and as much as he pleases. He wishes to dispose of his own time, to be governed only by necessity, to choose his friendships, his recreation, and his discipline; to act from judgment, not by command; to sacrifice himself through selfishness, not through servile obligation. Communism is essentially opposed to the free exercise of our faculties, to our noblest desires, to our deepest feelings. Any plan which could be devised for reconciling it with the demands of the individual reason and will would end only in changing the thing while preserving the name. Now, if we are honest truth-seekers, we shall avoid disputes about words.
Thus, communism violates the sovereignty of the conscience, and equality: the first, by restricting spontaneity of mind and heart, and freedom of thought and action; the second, by placing labor and laziness, skill and stupidity, and even vice and virtue on an equality in point of comfort. For the rest, if property is impossible on account of the desire to accumulate, communism would soon become so through the desire to shirk.

Source: (1776), Book V, Chapter I, Part II, p. 770.
Source: The Wealth of Nations

Principles of Political Economy http://www.econlib.org/library/Mill/mlP64.html (1848), Book V, Chapter II

Arthur Young (1789), quoted in: Samuel Laing (1842), Notes of a Traveller on the Social and Political State of France, Prussia, Switzerland, Italy and Other Parts of Europe During the Present Century, p. 35
According to Samuel Laing, Arthur Young wrote this "consequently before the sale of the national domains, crown and church estates, and confiscated estates of the noblesse, and before the law of partition of property among all the children became obligatory on all classes of the community... and a few mouths only before a law was passed directly opposed to the principle he recommends — the law abolishing the rights of primogeniture, and making the division of property among all the children obligatory; and which law has been ever since, that is, for nearly half a century, in general and uninterrupted operation."

Roosevelt here slightly misquotes Thomas Babington Macaulay, who in a speech on parliamentary reform (2 March 1831) asserted: "The voice of great events is proclaiming to us, Reform, that you may preserve."
1930s, Address at the Democratic State Convention, Syracuse, New York (1936)
Context: The true conservative seeks to protect the system of private property and free enterprise by correcting such injustices and inequalities as arise from it. The most serious threat to our institutions comes from those who refuse to face the need for change. Liberalism becomes the protection for the far-sighted conservative.
Never has a Nation made greater strides in the safeguarding of democracy than we have made during the past three years. Wise and prudent men — intelligent conservatives — have long known that in a changing world worthy institutions can be conserved only by adjusting them to the changing time. In the words of the great essayist, "The voice of great events is proclaiming to us. Reform if you would preserve." I am that kind of conservative because I am that kind of liberal.

Source: The Social Principles of Jesus (1918), p. 127

1860s, Second State of the Union address (1862)

“Why Nazism Was Socialism and Why Socialism Is Totalitarian,” lecture delivered at the Mises Institute’s “The Economics of Fascism: Supporters Summit 2005” in Auburn, Alabama (October 8, 2005) https://www.youtube.com/watch?v=XsaG-pJ_4RA&list=PLOCWSOHhjJPUQ9kkhBKV9js9tFJTPp3yC&index=3&t=0s

Source: Legal foundations of capitalism. 1924, p. 221