Full Idea
Pleasures are a hindrance to thinking, and the more enjoyable the greater the hindrance (e.g. sex).
Gist of Idea
The greater the pleasure, the greater the hindrance to thought
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1152b15)
Book Reference
Aristotle: 'Ethics (Nicomachean)', ed/tr. ThomsonJ A K/TredennickH [Penguin 1976], p.250
A Reaction
The intellectual's objection to excessive pleasure. He means practical thought, as well as theorising.