„People who can change and change again are so much more reliable and happier than those who can’t“

„Those, who expect more, will be disappointed, but no change will be effected by it.“

—  George Washington first President of the United States 1732 - 1799

Letter to George William Fairfax (25 June 1786), published in The Writings Of George Washington (1835) by Jared Sparks, p. 175
1780s
Contexto: My manner of living is plain. I do not mean to be put out of it. A glass of wine and a bit of mutton are always ready; and such as will be content to partake of them are always welcome. Those, who expect more, will be disappointed, but no change will be effected by it.

„Nothing would make me happier than to have you share it with everyone you know. All surveys have shown that, the more people who see it — especially those still sitting on the fence — the more likely we will have regime change.“

—  Michael Moore American filmmaker, author, social critic, and liberal activist 1954

[Fahrenheit 9/11 Out On Home Video/DVD Today! Pass it Around..., MichaelMoore.com, 5 October 2004, http://www.michaelmoore.com/words/mikes-letter/fahrenheit-911-out-on-home-videodvd-today-pass-it-around]
On the DVD release of Fahrenheit 9/11
2004

„People can cry much easier than they can change.“

—  James Baldwin (1924-1987) writer from the United States 1924 - 1987

„Those of us who do not live forever do not like change perhaps as much as those of you who do.“

—  Cassandra Clare, livro Clockwork Princess

Fonte: Clockwork Princess

„The problem is that too often the only people who can act don’t want change. Power doesn’t so much corrupt as it breeds conservatism.“

—  Jack McDevitt American novelist, Short story writer 1935

Fonte: Academy Series - Priscilla "Hutch" Hutchins, The Engines of God (1994), Chapter 25 (p. 356)

„People who want a cure, provided they can have it without pain, are like those who favour progress, provided they can have it without change.“

—  Anthony de Mello Indian writer 1931 - 1987

Healing
One Minute Wisdom (1989)
Fonte: Awareness: A de Mello Spirituality Conference in His Own Words

„War will come again after this one. It will come again as long as it can be determined by people other than those who fight.“

—  Henri Barbusse French novelist 1873 - 1935

Light (1919), Ch. XVI - De Profundis Clamavi
Contexto: War will come again after this one. It will come again as long as it can be determined by people other than those who fight. The same causes will produce the same effects, and the living will have to give up all hope.

„We really can’t change the world. We really can’t change other people! The best we can do is to start a few thinking here and there. The best way to do this, if we are sincere, is to change ourselves!“

—  Ammon Hennacy American Christian radical 1893 - 1970

The Book of Ammon

„You will never be happier than you expect. To change your happiness, change your expectation.“

—  Bette Davis film and television actress from the United States 1908 - 1989

Gerhard Gschwandtner, Great Thoughts to Sell By: Quotes to Motivate You to Success, McGraw-Hill Professional, 2007, ISBN 0071475990, p. 89.
Attributed

„To be interested in the changing seasons is… a happier state of mind than to be hopelessly in love with spring.“

—  George Santayana 20th-century Spanish-American philosopher associated with Pragmatism 1863 - 1952

„There’s no sense crying over what can’t be changed” “that’s what people cry over, things they can’t change”“

—  Alice Borchardt American fiction writer 1939 - 2007

Devoted

„“I can’t change what I am ovenight.”
“Nor can I. And yet, one can’t stop changing, either.”“

—  Joan Slonczewski, livro A Door into Ocean

Part 6, Chapter 16 (p. 368)
A Door into Ocean (1986)

„Those who cannot change their minds cannot change anything.“

—  George Bernard Shaw Irish playwright 1856 - 1950

Everybody's Political What's What? (ebook, must be borrowed) https://openlibrary.org/books/OL24979564M/Everybody's_political_what's_what (1944), Chapter XXXVII: Creed and Conduct, p. 330
1940s and later
Variante: Progress is impossible without change; and those who cannot change their minds cannot change anything.
Contexto: Progress is impossible without change; and those who cannot change their minds cannot change anything. Creeds, articles, and institutes of religious faith ossify our brains and make change impossible. As such they are nuisances, and in practice have to be mostly ignored.

„In the face of impossible odds, people who love this country can change it.“

—  Barack Obama 44th President of the United States of America 1961

„No one is more truly helpless, more completely a victim, than he who can neither choose nor change nor escape his protectors.“

—  John Holt, livro Escape from Childhood

Escape from Childhood (1974).

„… Writings can be stolen, or changed, or used for evil purposes. But isn't the risk worth taking? The more people who share knowledge, the greater safeguard for it. Isn't there more danger in ignorance than knowledge?“

—  Lloyd Alexander American children's writer 1924 - 2007

Fonte: The Arkadians

„It is by a wise economy of nature that those who suffer without change, and whom no one can help, become uninteresting. Yet so it may happen that those who need sympathy the most often attract it the least.“

—  F. H. Bradley British philosopher 1846 - 1924

No. 22.
Aphorisms (1930)

„There are those who stay at home and those who go away, and it has always been so. Everyone can choose for himself, but he must choose while there is still time and never change his mind.“

—  Tove Jansson, livro Moominvalley in November

Fonte: Moominvalley in November

„There is no such thing as change in international development, unless it belongs to the people who want to change“

—  Michael Elmore-Meegan British humanitarian 1959

Changing the World