Historia naturalis bulgarica 4: 10 - 15.
“Relationships, like an exquisite garden do not thrive on granite. Find the valley where the bright foliage permeates the landscape; this is where you plant the flowers.”
1982
Related quotes

The Single Grave from The London Literary Gazette (29th August 1829)
The Vow of the Peacock (1835)


Source: Permaculture: A Designers' Manual (1988), chapter 8.12

“If you are unable to find the truth right where you are, where else do you expect to find it?”

Quote, 1950, in: Fernand Léger - The Later Years, catalogue ed. Nicolas Serota, published by the Trustees of the Whitechapel Art gallery, London, Prestel Verlag, 1988, p. 67
Quotes of Fernand Leger, 1950's

Recalled in a letter from Joshua Speed in Herndon's Lincoln (1890), p. 527 http://books.google.com/books?id=rywOAAAAIAAJ&pg=PA527&dq=%22plucked+a+thistle+and+planted+a+flower%22
Posthumous attributions

Heathcliff (Ch. XIV).
Source: Wuthering Heights (1847)
Context: You talk of her mind being unsettled - how the devil could it be otherwise, in her frightful isolation? And that insipid, paltry creature attending her from duty and humanity! From pity and charity. He might as well plant an oak in a flower-pot, and expect it to thrive, as imagine he can restore her to vigour in the soil of his shallow cares!