“The truth is, I do indulge myself a little the more in pleasure, knowing that this is the proper age of my life to do it; and out of my observation that most men that do thrive in the world, do forget to take pleasure during the time that they are getting their estate, but reserve that till they have got one, and then it is too late for them to enjoy it with any pleasure.”

Lama’at (Divine Flashes)

Catherine Earnshaw (Ch. IX).
Source: Wuthering Heights (1847)
Context: I can not express it; but surely you and everybody have a notion that there is, or should be an existence of yours beyond you. What were the use of creation if I were entirely contained here? My great miseries in this world have been Heathcliff's miseries, and I watched and felt each from the beginning; my great thought in living is himself. If all else perished, and he remained, I should still continue to be; and if all else remained, and he were annihilated, the universe would turn to a mighty stranger. I should not seem a part of it. My love for Linton is like the foliage in the woods: time will change it, I'm well aware, as winter changes the trees. My love for Heathcliff resembles the eternal rocks beneath: a source of little visible delight, but necessary. Nelly, I am Heathcliff - he's always, always in my mind - not as a pleasure, any more than I am always a pleasure to myself - but as my own being; so, don't talk of our separation again - it is impracticable.

The Trembling of a Leaf (1921), ch. 3

Quoted in "Table Talk" http://books.google.com/books?id=LIxUAAAAcAAJ&q=%22greatest+pleasure+I+know+is+to+do+a+good+action+by+stealth+and+to+have+it+found+out+by+accident%22&pg=PA14#v=onepage in The Athenaeum magazine (4 January 1834).

It's a Business Doing Pleasure with You
Song lyrics, Southern Voice (2009)

No. 1.
Seventy Resolutions (1722-1723)

Remark to a neighbor, quoted by John Lewis in Cosmopolitan (1908)

The Monthly Magazine