急求“知足常乐，善有善报，开卷有益，良药苦口”的英文翻译

A contened mind is perpetual feast.知足常乐
Good will be rewarded with good. 善有善报
Reading will always do goods.开卷有益
Good medicine tastes bitter. 良药苦口

Happies person, the good is rewarded with good, opens a bookbeneficially, good medicine tastes bitter