“Where there is happiness, there is found pleasure in nonsense. The transformation of experience into its opposite, of the suitable into the unsuitable, the obligatory into the optional (but in such a manner that this process produces no injury and is only imagined in jest), is a pleasure; …”

Source: Flaubert's Parrot

The Elements of True Piety (c. 1677), The Shorter Leibniz Texts (2006) http://books.google.com/books?id=oFoCY3xJ8nkC&dq edited by Lloyd H. Strickland, p. 189

Nahj al-Balagha

1850s, Address before the Wisconsin State Agricultural Society (1859)

First Tractate : The Animate and the Man, §1
The First Ennead (c. 250)
Context: Pleasure and distress, fear and courage, desire and aversion, where have these affections and experiences their seat?
Clearly, either in the Soul alone, or in the Soul as employing the body, or in some third entity deriving from both. And for this third entity, again, there are two possible modes: it might be either a blend or a distinct form due to the blending.

8
Variant translation: No pleasure is itself a bad thing, but the things that produce some kinds of pleasure, bring along with them unpleasantness that is much greater than the pleasure itself.
Sovereign Maxims

1979

Against the Stream (2007)