Aristotle, Nicomachean Ethics
H. Rackham, Ed.

[4] The specific quality of pleasure on the contrary is perfect at any moment. It is clear therefore that pleasure is not the same as motion, and that it is a whole and something perfect.

This may also be inferred from the fact that a movement necessarily occupies a space of time, whereas a feeling of pleasure does not, for every moment of pleasurable consciousness is a perfect whole.

These considerations also show that it is a mistake to speak of pleasure as the result of a motion or of a process of generation. For we cannot so describe everything, but only such things as are divided into parts and are not wholes. Thus an act of sight, a geometrical point, an arithmetical unit are not the result of a process of generation （nor is any of them a motion or process¹）. Pleasure therefore also is not the result of a motion or process; for pleasure is a whole.