Full Idea
The only reason the common man disapproves of pleasures is if they lead to pain and deprive us of future pleasures.
Gist of Idea
People tend only to disapprove of pleasure if it leads to pain, or prevents future pleasure
Source
Plato (Protagoras [c.391 BCE], 354a)
Book Reference
Plato: 'Protagoras and Meno', ed/tr. Guthrie,W K C [Penguin 1956], p.90
A Reaction
Plato has a strong sense that some pleasures are just innately depraved and wicked. If those pleasure don't hurt anyone, it is very hard to pinpoint what is wrong with them.