What, if anything, do the infinity of different traditional and individual ideas of a garden have in common? They vary so much in purpose, in size, in style and content that not even flowers, or even plants at all, can be said to be essential. In the last analysis there is only one common factor between all gardens, and this is the control of nature by man. Control, that is, for aesthetic reasons. . . . The essence is control. Without constant watchful care a garden - any garden - rapidly returns to the state of the country all around it.
Source: The Principles of Gardening, 1979, p. 8.
Contributed by: Zaady