the cure is worse than the disease

the ball is in someone's court

(figuratively) to saw off the branch one is sitting on

once one has done something, one does not have to worry about it anymore (used to encourage someone to finish what they have to do)

the more the merrier

to give credit where credit's due

Alternative form of il faut battre le fer pendant qu'il est chaud

might makes right, might is right

women are fickle, and one should not trust them, believe them nor take them seriously

revenge is a dish best served cold