Pleasur is to be welcomed every pain avoide but in certain claim ofduty or the obligations.
Which is same saying through shrinking from toil and pains see cases are perfctly simple & easy to distiguish. In a free hour, when our power we like best.
To taken trivial example which of us ever undertakes it laborious physical exercise works.
Who loves or pursue or desire to obtain pain of itself, because it can procure great pleasure.