“Virtue is not a chemical product, as Taine once described it: it is a historic product, like language and literature; and this means that if we cease to care about it, cease to cultivate it, cease to transmit its funded values, a large part of it will become meaningless, like a dead language to which we have lost the key. That, I submit, is what has happened in our own lifetime.”

No. 63.
Aphorisms (1930)

vol. 1, p. 19
Letters

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.

Source: Meditations

"The State of the Union," The Nation (13 September 2004)
2000s

On acting. [Several Interviews with Timothy Dalton on his 007 portrayal, including ‘Licence to Act: Timothy Dalton Uses James Bond To Get What He Wants’ by Marshall Fine, taken from ‘Lifestyle’ magazine, 11 July 1989., http://www.geocities.com/Hollywood/Film/7518/Bond_Eng/Bond_Eng.htm, http://web.archive.org/20000304095759/www.geocities.com/Hollywood/Film/7518/Bond_Eng/Bond_Eng.htm, 2000-03-04].
Attributed

Observations on a Late Publication on the Present State of the Nation (1769), volume i, p. 273
1760s

Article for The Sunday Telegraph, citing the swing to the Conservatives in his constituency and others with large working-class electorates (18 October 1964), from Simon Heffer, Like the Roman. The Life of Enoch Powell (Phoenix, 1999), p. 364
1960s

Quote of Zadkine from New York, early 1944; as cited in: Artists on Art – from the 14th – 20th centuries, ed. Robert Goldwater and Marco Treves; Pantheon Books, 1972, London, p. 430
1940 - 1960