“Lettuce is like conversation: it must be fresh and crisp, so sparkling that you scarcely notice the bitter in it.”
Ninth Week.
My Summer in a Garden (1870)
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Charles Dudley Warner 16
American writer 1829–1900Related quotes
“So rare,
You're like the sparkle of old champagne;
Orchids in cellophane
Couldn't compare to you.”
Song So Rare

"Abuse of Words" http://www.gutenberg.org/files/35621/35621-h/35621-h.htm (1764)
C.f. Locke: "The names of simple ideas are not capable of any definition; the names of all complex ideas are. It has not, that I know, been yet observed by anybody what words are, and what are not, capable of being defined; the want whereof is (as I am apt to think) not seldom the occasion of great wrangling and obscurity in men's discourses, whilst some demand definitions of terms that cannot be defined; and others think they ought not to rest satisfied in an explication made by a more general word, and its restriction, (or to speak in terms of art, by a genus and difference), when, even after such definition, made according to rule, those who hear it have often no more a clear conception of the meaning of the word than they had before."
An Essay Concerning Human Understanding (1689) Book III http://oregonstate.edu/instruct/phl302/texts/locke/locke1/Book3.html, chapter 4
Citas, Dictionnaire philosophique (1764)

“Oh why rebuke you him that loves you so? / Lay breath so bitter on your bitter foe.”
Source: A Midsummer Night's Dream

Rooster Teeth Podcast #484 https://www.youtube.com/watch?v=-UXQPR0DLzU. youtube.com. March 21, 2018. Retrieved January 29, 2019.

“I don't want you to get the wrong idea. Not all liberals smoke lettuce!”
Bullet in a Bible (2005) (backstage in England).