“What would people think of a tradesman, that was to give a ball in his shop, hire performers, and hand refreshments about, with a view to benefit his business?”

He turned to Lord Peter with a sudden realization. “I’m sorry,” he said. “I didn’t mean to imply—”
”That’s all right, Your Highness,” Lord Peter said. “It’s a common reaction. Their spies are dirty, filthy scum, not fit to wipe your boots on, while our spies are noble gentlemen doing dangerous work for the love of King and Country. Would that it were so, Your Highness, but I’m afraid that sometimes the desired image is at fault—in both directions.”
Source: Ten Little Wizards (1988), Chapter 4 (p. 33)

Connecticut.

19th World Vegetarian Congress 1967

Writers at Work interview (1963)

“His Highness,” p. 90
The Sun Watches the Sun (1999), Sequence: “A Game”

Section 1, “Attractor“ (p. 18)
Mother of Storms (1994)

Native Son (1940)

Quoted in A Ford Not A Lincoln (1975), Richard Reeves, Harcourt Brace Jovanovich, ch, 1 ; as cited by The Columbia Dictionary of Quotations (1993), ed. Robert Andrews, Columbia University Press, p. 707 ISBN 0231071949
1970s