It is sometimes necessary to cooperate with a person one does not like or agree with, in order to combat a common threat.

Alternative form of the enemy of my enemy is my friend

Insistence on perfection often precludes the opportunity for something worthwhile. / Insistence on perfection precludes gradual improvement through compromises.

Alternative form of perfect is the enemy of good

Alternative form of perfect is the enemy of good

Alternative form of perfect is the enemy of good

Alternative form of perfect is the enemy of good

Alternative form of perfect is the enemy of good

Indicating that one's close associates prove more adversarial than one's opponents.

Alternative form of with friends like these who needs enemies?