for something's sake

Từ điển Oxford Advanced Learner 8th

▪ I. for sth's sake idiom
because of the interest or value sth has, not because of the advantages it may bring
•I believe in education for its own sake.
•art for art's sake
Main entry: ↑sake_idiom
 
▪ II. for the sake of sb/sth | for sb's/sth's sake idiom
in order to help sb/sth or because you like sb/sth
•They stayed together for the sake of the children.
•You can do it. Please, for my sake.
•I hope you're right, for all our sakes (= because this is important for all of us).
Main entry: ↑sake_idiom