“There is no point in hiding that before the war we mostly learned to attack, and did not pay enough attention to such an important manoeuvre as retreat. Now we have paid for this. It turned out that the commanders and the staff were not sufficiently prepared to prepare and execute the retreat manoeuvre. Now, in the second week of war, we had in fact to learn from the beginning the most difficult art - the art of the execution of retreat.”

Speech to Conservative Rally at Cheltenham (3 July 1982) http://www.margaretthatcher.org/document/104989, regarding the Falkland Islands War.
First term as Prime Minister
Context: The battle of the South Atlantic was not won by ignoring the dangers or denying the risks. It was achieved by men and women who had no illusions about the difficulties. We faced them squarely and we were determined to overcome... What has indeed happened is that now once again Britain is not prepared to be pushed around. We have ceased to be a nation in retreat. We have instead a new-found confidence—born in the economic battles at home and tested and found true 8,000 miles away... we rejoice that Britain has re-kindled that spirit which has fired her for generations past and which today has begun to burn as brightly as before. Britain found herself again in the South Atlantic and will not look back from the victory she has won.

"Nature Is My God" - interview with Fred Matser in Resurgence No. 184 (September-October 1997) http://www.resurgence.org/resurgence/184/gorbachev.htm
Context: We have retreated from the perennial values. I don't think that we need any new values. The most important thing is to try to revive the universally known values from which we have retreated.
As a young man, I really took to heart the Communist ideals. A young soul certainly cannot reject things like justice and equality. These were the goals proclaimed by the Communists. But in reality that terrible Communist experiment brought about repression of human dignity. Violence was used in order to impose that model on society. In the name of Communism we abandoned basic human values. So when I came to power in Russia I started to restore those values; values of "openness" and freedom.

A Single Spark Can Start A Prairie Fire https://www.marxists.org/reference/archive/mao/selected-works/volume-1/mswv1_6.htm (1930)
He later wrote the similar quote "When guerrillas engage a stronger enemy, they withdraw when he advances; harass him when he stops; strike him when he is weary; pursue him when he withdraws." On Guerrilla Warfare https://www.marxists.org/reference/archive/mao/works/1937/guerrilla-warfare/ch01.htm (1937), Chapter 1 - "What Is Guerrilla Warfare?"

Disputed, Give me liberty, or give me death! (1775)

2000s, 2006, State of the Union (January 2006)

Letter to A.S. Suvorin (March 17, 1892)
Letters

2000s, 2003, Remarks on U.S.-British relations and foreign policy (November 2003)

Quoted in "I. C. Bagramyan: A Photo Album About A Soviet Marshal" - Yerevan - 1987

War Memoirs (1938)
War Memoirs